CONCENTRATION

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 Dictionary entry overview: What does concentration mean? 

• CONCENTRATION (noun)
  The noun CONCENTRATION has 7 senses:

1. the strength of a solution; number of molecules of a substance in a given volume

2. the spatial property of being crowded together

3. strengthening the concentration (as of a solute in a mixture) by removing diluting material

4. increase in density

5. complete attention; intense mental effort

6. bringing together military forces

7. great and constant diligence and attention

  Familiarity information: CONCENTRATION used as a noun is common.

 Dictionary entry details 

• CONCENTRATION (noun)

Sense 1

Meaning:

The strength of a solution; number of molecules of a substance in a given volume

Classified under:

Nouns denoting attributes of people and objects

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

property (a basic or essential attribute shared by all members of a class)

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

titer; titre (the concentration of a solution as determined by titration)

hydrogen ion concentration (the number of moles of hydrogen ions per cubic decimeter)

molal concentration; molality (concentration measured by the number of moles of solute per kilogram of solvent)

M; molar concentration; molarity (concentration measured by the number of moles of solute per liter of solution)

Derivation:

concentrate (make denser, stronger, or purer)

Sense 2

Meaning:

The spatial property of being crowded together

Classified under:

Nouns denoting attributes of people and objects

Synonyms:

compactness; concentration; denseness; density; tightness

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

spacing; spatial arrangement (the property possessed by an array of things that have space between them)

Antonym:

distribution (the spatial or geographic property of being scattered about over a range, area, or volume)

Derivation:

concentrate (draw together or meet in one common center)

Sense 3

Meaning:

Strengthening the concentration (as of a solute in a mixture) by removing diluting material

Classified under:

Nouns denoting acts or actions

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

strengthening (the act of increasing the strength of something)

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

pervaporation (the concentration of a colloidal solution whose colloid will not pass through a semipermeable membrane; solution is placed in a bag of the membrane and the solvent is evaporated off)

Antonym:

dilution (weakening (reducing the concentration) by the addition of water or a thinner)

Derivation:

concentrate (cook until very little liquid is left)

concentrate (be cooked until very little liquid is left)

concentrate (make denser, stronger, or purer)

concentrate (make more concise)

concentrate (compress or concentrate)

Sense 4

Meaning:

Increase in density

Classified under:

Nouns denoting natural events

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

increase (a change resulting in an increase)

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

compaction; compression; concretion; densification (an increase in the density of something)

rarefaction (a decrease in the density of something)

Derivation:

concentrate (cook until very little liquid is left)

concentrate (be cooked until very little liquid is left)

concentrate (make denser, stronger, or purer)

Sense 5

Meaning:

Complete attention; intense mental effort

Classified under:

Nouns denoting cognitive processes and contents

Synonyms:

absorption; concentration; engrossment; immersion

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

attention (the faculty or power of mental concentration)

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

centering; direction; focal point; focus; focusing; focussing (the concentration of attention or energy on something)

specialism (the concentration of your efforts on a particular field of study or occupation)

study (a state of deep mental absorption)

Derivation:

concentrate (direct one's attention on something)

Sense 6

Meaning:

Bringing together military forces

Classified under:

Nouns denoting acts or actions

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

assemblage; assembly; gathering (the social act of assembling)

Derivation:

concentrate (draw together or meet in one common center)

Sense 7

Meaning:

Great and constant diligence and attention

Classified under:

Nouns denoting attributes of people and objects

Synonyms:

assiduity; assiduousness; concentration

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

diligence; industriousness; industry (persevering determination to perform a task)

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

engrossment; intentness (the quality of being intent and concentrated)

singleness (the quality of concentrating on one central objective)

Derivation:

concentrate (direct one's attention on something)

 Context examples 

The cumulative amount recovered extrapolated to infinity, calculated using the observed value of the last non-zero concentration, divided by the body mass index.

(Amount Recovered Infinity Observed Normalized by Body Mass Index, NCI Thesaurus)

The cumulative amount recovered extrapolated to infinity, calculated using the observed value of the last non-zero concentration.

(Amount Recovered Infinity Observed, NCI Thesaurus)

At low plasma concentration this agent is filtered by the glomeruli and almost completely cleared from the renal blood stream by active tubular secretion in a single transit through the kidney.

(Aminohippurate Sodium, NCI Thesaurus)

After binding substrate, transmembrane transporters often undergo an energy-dependent conformational change that moves the substrate across the membrane with (symport) or against (antiport) concentration gradients.

(Amino Acid Transporter, NCI Thesaurus)

The cumulative amount recovered extrapolated to infinity, calculated using the observed value of the last non-zero concentration, divided by the surface area.

(Amount Recovered Infinity Observed Normalized by Surface Area, NCI Thesaurus)

The cumulative amount recovered extrapolated to infinity, calculated using the observed value of the last non-zero concentration, divided by the weight.

(Amount Recovered Infinity Observed Normalized by Weight, NCI Thesaurus)

Formaldehyde urinary concentrations are dependent on urine pH, volume, and flow rate.

(Methenamine Hippurate, NCI Thesaurus)

This leads to an increase in synaptic concentration of these neurotransmitters and results in increased stimulation of postsynaptic receptors.

(Methamphetamine, NCI Thesaurus)

The cumulative amount recovered extrapolated to infinity, calculated using the predicted value of the last non-zero concentration.

(Amount Recovered Infinity Predicted, NCI Thesaurus)

A substance which, when added to water, decreases the hydrogen-ion concentration; a solution containing a base, a substance that combines with a hydrogen ion in solution.

(Alkaline, NOAA Paleoclimate Glossary)