Library / English Dictionary

RUBIDIUM

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite

Synonyms:

atomic number 37; Rb; rubidium

Classified under:

Nouns denoting substances

Hypernyms ("rubidium" 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 ("rubidium" 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)

lepidolite (a mineral of the mica group; an important source of lithium)

pollucite (a rare mineral that is an important source of cesium)

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