ATOMIC NUMBER 19

 Dictionary entry overview: What does atomic number 19 mean? 

• ATOMIC NUMBER 19 (noun)
  The noun ATOMIC NUMBER 19 has 1 sense:

1. a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite

  Familiarity information: ATOMIC NUMBER 19 used as a noun is very rare.

 Dictionary entry details 

• ATOMIC NUMBER 19 (noun)

Sense 1

Meaning:

A light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite

Classified under:

Nouns denoting substances

Synonyms:

atomic number 19; K; potassium

Hypernyms ("atomic number 19" is a kind of...):

metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)

Holonyms ("atomic number 19" is a substance of...):

carnallite (a white or reddish mineral consisting of hydrous chlorides of potassium and magnesium; used as a fertilizer and as a source of potassium and magnesium)

kainite (a white mineral consisting of magnesium sulphate and potassium chloride; a source of potassium salts; used as a fertilizer)

langbeinite (a mineral consisting of potassium magnesium double sulphate; used as a fertilizer)

brine; saltwater; seawater (water containing salts)

sylvine; sylvite (a mineral consisting of native potassium chloride; an important ore of potassium that is found in sedimentary beds)