| / 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:
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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