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 Dictionary entry overview: What does chemistry mean? 

  The noun CHEMISTRY has 2 senses:

1. the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
2. the way two individuals relate to each other

  Familiarity information: CHEMISTRY used as a noun is rare.

 Dictionary entry details 


Sense 1chemistry [BACK TO TOP]


The science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

Classified under:

Nouns denoting cognitive processes and contents


chemical science; chemistry

Hypernyms ("chemistry" is a kind of...):

natural science (the sciences involved in the study of the physical world and its phenomena)

Domain member category:

technical ((of production of chemicals) made for commercial purposes especially on a large scale)

fractionate (separate into constituents or fractions containing concentrated constituents)

fractionate (obtain by a fractional process)

transaminate (undergo transfer from one compound to another)

sequester (undergo sequestration by forming a stable compound with an ion)

isomerise; isomerize (cause to change into an isomer)

isomerise; isomerize (change into an isomer)

demineralise; demineralize (remove the minerals or salts from)

desorb (go away from the surface to which (a substance) is adsorbed)

desorb (remove from a surface on which it is adsorbed)

ligate (bind chemically)

sulfurette; sulphurette (combine with sulfur)

absorb (become imbued)

reversible (capable of assuming or producing either of two states)

amphiprotic; amphoteric (having characteristics of both an acid and a base and capable of reacting as either)

basic (of or denoting or of the nature of or containing a base)

alkalic; alkaline (relating to or containing an alkali; having a pH greater than 7)

acid (having the characteristics of an acid)

acidic (being or containing an acid; of a solution having an excess of hydrogen atoms (having a pH of less than 7))

glycerolise; glycerolize (place in glycerol)

formulate (prepare according to a formula)

carburet (combine with carbon)

sorb; take up (take up a liquid or a gas either by adsorption or by absorption)

adsorb (accumulate (liquids or gases) on the surface)

bind (form a chemical bond with)

volatilise; volatilize (make volatile; cause to pass off in a vapor)

saponify (become converted into soap by being hydrolized into an acid and alcohol as a result of being treated with an alkali)

preisolate (isolate beforehand)

isolate (obtain in pure form)

distill; make pure; purify; sublimate (remove impurities from, increase the concentration of, and separate through the process of distillation)

saturate (cause (a chemical compound, vapour, solution, magnetic material) to unite with the greatest possible amount of another substance)

build (improve the cleansing action of)

react (undergo a chemical reaction; react with another substance under certain conditions)

solvate (cause a solvation in (a substance))

solvate (undergo solvation or convert into a solvate)

alloy (make an alloy of)

admix (mix or blend)

ammonify (treat with ammonia; cause to undergo ammonification)

thoriate (impregnate with thorium oxide to increase thermionic emission)

coke (become coke)

saponify (convert into soap by hydrolizing an ester into an acid and alcohol as a result of treating it with an alkali)

carboxylate (treat (a chemical compound) with carboxyl or carboxylic acid)

acetylate; acetylise; acetylize (receive substitution of an acetyl group)

acetylate; acetylise; acetylize (introduce an acetyl group into (a chemical compound))

etherify (change into an ether)

esterify (change (a compound) into an ester)

detoxicate; detoxify (remove poison from)

denitrify (remove nitrogen from)

decarboxylate (lose a carboxyl group)

decarboxylate (remove a carboxyl group from (a chemical compound))

conjugate (unite chemically so that the product is easily broken down into the original compounds)

reversibly (in a reversible manner)

benzylic (relating to benzyl)

azido (relating to or containing the azido group N3)

aromatic ((chemistry) of or relating to or containing one or more benzene rings)

allylic (of or pertaining to the allyl radical)

alkylic (of or related to an alkyl)

anhydrous (without water; especially without water of crystallization)

hydrated; hydrous (containing combined water (especially water of crystallization as in a hydrate))

volatile (evaporating readily at normal temperatures and pressures)

supernatant (of a liquid; floating on the surface above a sediment or precipitate)

rich (high in mineral content; having a high proportion of fuel to air)

cacodylic (of or relating to cacodyl)

carbocyclic (having or relating to or characterized by a ring composed of carbon atoms)

carbolated (containing or treated with carbolic acid)

trivalent (having a valence of three)

tetravalent (haveing a valence of four)

pentavalent (having a valence of five)

bivalent; divalent (having a valence of two or having two valences)

ethereal (of or containing or dissolved in ether)

polymorphic; polymorphous (relating to the crystallization of a compound in two or more different forms)

valent ((chemistry) having valence; usually used in combination)

mercuric; mercurous (of or containing mercury)

carboxyl; carboxylic (relating to or containing the carboxyl group or carboxyl radical)

carbonyl; carbonylic (relating to or containing the carbonyl group)

indifferent; inert; neutral (having only a limited ability to react chemically; chemically inactive)

unreactive (not reacting chemically)

reactive (participating readily in reactions)

bound (held with another element, substance or material in chemical or physical union)

free (unconstrained or not chemically bound in a molecule or not fixed and capable of relatively unrestricted motion)

unsaturated (used of a compound (especially of carbon) containing atoms sharing more than one valence bond)

saturated (used especially of organic compounds; having all available valence bonds filled)

cyclic (of a compound having atoms arranged in a ring structure)

noncritical (not critical; not at a point of abrupt change)

critical (at or of a point at which a property or phenomenon suffers an abrupt change especially having enough mass to sustain a chain reaction)

lipophilic; lipotropic (having an affinity for lipids)

oleophilic (having a strong affinity for oils rather than water)

hydrophilic (having a strong affinity for water; tending to dissolve in, mix with, or be wetted by water)

conjugate; conjugated (of an organic compound; containing two or more double bonds each separated from the other by a single bond)

conjugate; conjugated (formed by the union of two compounds)

heavy ((physics, chemistry) being or containing an isotope with greater than average atomic mass or weight)

inorganic (relating or belonging to the class of compounds not having a carbon basis)

organic (relating or belonging to the class of chemical compounds having a carbon basis)

clathrate (designating or relating to a compound in which one component is physically enclosed within the crystal structure of another)

man-made; semisynthetic; synthetic (not of natural origin; prepared or made artificially)

multivalent; polyvalent (having more than one valence, or having a valence of 3 or higher)

monovalent; univalent (having a valence of 1)

membered (having members; normally used in chemistry in combination with a number)

de-iodinating (removing iodine from)

iodinating (combining or causing to combine with iodine)

light ((physics, chemistry) not having atomic weight greater than average)

hydrophobic (lacking affinity for water; tending to repel and not absorb water; tending not to dissolve in or mix with or be wetted by water)

transmute (alter the nature of (elements))

atom ((physics and chemistry) the smallest component of an element having the chemical properties of the element)

dissociation ((chemistry) the temporary or reversible process in which a molecule or ion is broken down into smaller molecules or ions)

displacement; displacement reaction ((chemistry) a reaction in which an elementary substance displaces and sets free a constituent element from a compound)

chemical decomposition reaction; decomposition; decomposition reaction ((chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance)

chemical reaction; reaction ((chemistry) a process in which one or more substances are changed into others)

chemical action; chemical change; chemical process ((chemistry) any process determined by the atomic and molecular composition and structure of the substances involved)

association ((chemistry) any process of combination (especially in solution) that depends on relatively weak chemical bonding)

absorption; soaking up ((chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid)

dimorphism ((chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms)

pleomorphism; polymorphism ((chemistry) the existence of different kinds of crystal of the same chemical compound)

chemical phenomenon (any natural phenomenon involving chemistry (as changes to atoms or molecules))

electrolysis ((chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions)

imbibition ((chemistry) the absorption of a liquid by a solid or gel)

rectification ((chemistry) the process of refinement or purification of a substance by distillation)

mixture ((chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding))

acceptor ((chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated)

multivalence; multivalency; polyvalence; polyvalency ((chemistry) the state of having a valence greater than two)

activity ((chemistry) the capacity of a substance to take part in a chemical reaction)

state; state of matter ((chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container))

saturation point ((chemistry) the stage at which a substance will receive no more of another substance in solution or in a vapor)

stoichiometry ((chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers))

abundance ((chemistry) the ratio of the total mass of an element in the earth's crust to the total mass of the earth's crust; expressed as a percentage or in parts per million)

equilibrium constant ((chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction))

acid value ((chemistry) the amount of free acid present in fat as measured by the milligrams of potassium hydroxide needed to neutralize it)

chemist (a scientist who specializes in chemistry)

long chain; long-chain molecule ((chemistry) a relatively long chain of atoms in a molecule)

closed chain; ring ((chemistry) a chain of atoms in a molecule that forms a closed loop)

Henry's law ((chemistry) law formulated by the English chemist William Henry; the amount of a gas that will be absorbed by water increases as the gas pressure increases)

equilibrium law; law of chemical equilibrium ((chemistry) the principle that (at chemical equilibrium) in a reversible reaction the ratio of the rate of the forward reaction to the rate of the reverse reaction is a constant for that reaction)

distribution law ((chemistry) the total energy in an assembly of molecules is not distributed equally but is distributed around an average value according to a statistical distribution)

Dalton's law; Dalton's law of partial pressures; law of partial pressures ((chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture equals the pressure it would exert if it occupied the same volume alone at the same temperature)

pH; pH scale ((from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic))

concentration ((chemistry) the strength of a solution; number of molecules of a substance in a given volume (expressed as moles/cubic meter))

valence; valency ((chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent))

molecular weight; relative molecular mass ((chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule)

atomic weight; relative atomic mass ((chemistry) the ratio of the atomic mass of an element to half the atomic mass of carbon)

atomic mass ((chemistry) the mass (in atomic mass units) of an isotope of an element)

law of constant proportion; law of definite proportions ((chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight)

law of equivalent proportions; law of reciprocal proportions ((chemistry) law stating that the proportions in which two elements separately combine with a third element are also the proportions in which they combine together)

Dalton's law; law of multiple proportions ((chemistry) law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation)

chain; chemical chain ((chemistry) a series of linked atoms (generally in an organic molecule))

sublimation ((chemistry) a change directly from the solid to the gaseous state without becoming liquid)

allomerism ((chemistry) variability in chemical composition without variation in crystalline form)

migration ((chemistry) the nonrandom movement of an atom or radical from one place to another within a molecule)

Ostwald's theory of indicators; theory of indicators ((chemistry) the theory that all indicators are either weak acids or weak bases in which the color of the ionized form is different from the color before dissociation)

Arrhenius theory of dissociation; theory of dissociation; theory of electrolytic dissociation ((chemistry) theory that describes aqueous solutions in terms of acids (which dissociate to give hydrogen ions) and bases (which dissociate to give hydroxyl ions); the product of an acid and a base is a salt and water)

atomic theory; atomism; atomist theory; atomistic theory ((chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles)

organic chemistry (the chemistry of compounds containing carbon (originally defined as the chemistry of substances produced by living organisms but now extended to substances synthesized artificially))

Mendeleev's law; periodic law ((chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers)

law of mass action ((chemistry) the law that states the following principle: the rate of a chemical reaction is directly proportional to the molecular concentrations of the reacting substances)

electronegativity; negativity ((chemistry) the tendency of an atom or radical to attract electrons in the formation of an ionic bond)

carbonise; carbonize; carburise; carburize (unite with carbon)

crack (reduce (petroleum) to a simpler compound by cracking)

crack (break into simpler molecules by means of heat)

deoxidise; deoxidize; reduce (to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons)

distil; distill; extract (extract by the process of distillation)

distil; distill (undergo the process of distillation)

moonshine (distill (alcohol) illegally; produce moonshine)

attenuate; rarefy (weaken the consistency of (a chemical substance))

bate (soak in a special solution to soften and remove chemicals used in previous treatments)

dissociate (to undergo a reversible or temporary breakdown of a molecule into simpler molecules or atoms)

break down; break up; decompose (separate (substances) into constituent elements or parts)

catabolise; catabolize (subject to catabolism)

oxidate; oxidise; oxidize (add oxygen to or combine with oxygen)

acetify; acidify (turn acidic)

calcine (heat a substance so that it oxidizes or reduces)

resublime (sublime (a compound) once again)

peptise; peptize (disperse in a medium into a colloidal state)

catalyse; catalyze (change by catalysis or cause to catalyze)

polymerise; polymerize (cause (a compound) to polymerize)

copolymerise; copolymerize (polymerize together)

polymerise; polymerize (undergo polymerization)

reform (produce by cracking)

reform (break up the molecules of)

alkalify; alkalise; alkalize; basify (turn basic and less acidic)

strip (remove a constituent from a liquid)

nitrate (treat with nitric acid, so as to change an organic compound into a nitrate)

iodise; iodize (treat with iodine)

foryml ((chemistry) the negative univalent acyl radical CHO that occurs in aldehydes)

chemical compound; compound ((chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight)

anticatalyst ((chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst)

sensitiser; sensitizer ((chemistry) a substance other than a catalyst that facilitates the start of a catalytic reaction)

accelerator; catalyst ((chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected)

molecule ((physics and chemistry) the simplest structural unit of an element or compound)

emulsion ((chemistry) a colloid in which both phases are liquids)

actinide series ((chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium)

fullerene (a form of carbon having a large molecule consisting of an empty cage of sixty or more carbon atoms)

chemical group; group; radical ((chemistry) two or more atoms bound together as a single unit and forming part of a molecule)

monad ((chemistry) an atom having a valence of one)

fluorocarbon (a halocarbon in which some hydrogen atoms have been replaced by fluorine; used in refrigerators and aerosols)

indicator ((chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction)

butylate (introduce the butyl group into a chemical compound)

include (add as part of something else; put in as part of a set, group, or category)

clean; scavenge (remove unwanted substances from)

resuspend (put back into suspension)

suspend (cause to be held in suspension in a fluid)

alchemise; alchemize (alter (elements) by alchemy)

equilibrate (bring to a chemical stasis or equilibrium)

alkalinise; alkalinize (become alkaline)

alkalinise; alkalinize (make (a substance) alkaline)

deaden (convert (metallic mercury) into a grey powder consisting of minute globules, as by shaking with chalk or fatty oil)

convert (change in nature, purpose, or function; undergo a chemical change)

Hyponyms (each of the following is a kind of "chemistry"):

chemoimmunology; immunochemistry (the field of chemistry concerned with chemical processes in immunology (such as chemical studies of antigens and antibodies))

nuclear chemistry; radiochemistry (the chemistry of radioactive substances)

photochemistry (branch of chemistry that deals with the chemical action of light)

geochemistry (the chemistry of the earth's crust)

femtochemistry (the branch of chemistry that studies elementary (often very fast) chemical reactions as they occur; the experimental methods are often based on the use of femtosecond laser pulses)

electrochemistry (branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions)

physical chemistry (the branch of chemistry dealing with the physical properties of chemical substances)

inorganic chemistry (the chemistry of compounds that do not contain hydrocarbon radicals)

organic chemistry (the chemistry of compounds containing carbon (originally defined as the chemistry of substances produced by living organisms but now extended to substances synthesized artificially))

thermochemistry (the branch of chemistry that studies the relation between chemical action and the amount of heat absorbed or generated)

Sense 2chemistry [BACK TO TOP]


The way two individuals relate to each other

Classified under:

Nouns denoting relations between people or things or ideas


interpersonal chemistry; alchemy; chemistry

Context examples:

their chemistry was wrong from the beginning -- they hated each other / a mysterious alchemy brought them together

Hypernyms ("chemistry" is a kind of...):

social relation (a relation between living organisms (especially between people))

 Learn English with... Proverbs of the week 
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