Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
Advanced Dictionary    
Display options
 
Lookup History
rubidium

ru·bid·i·um

rubidium

 
pronunciation:
ru bI di m
features:
Word Combinations (noun), Word Parts
part of speech: noun
definition: a highly reactive chemical element of the alkali metal group that has thirty-seven protons in each nucleus, that occurs naturally only in compounds with oxygen and other elements, but that can be isolated as a liquid or very soft solid metal. (symbol: Rb)
Word CombinationsSubscriber feature About this feature
derivation: rubidic (adj.)
Word PartsSubscriber feature About this feature