DICTIONARY ENTRY
4 SYLLABLES
rubidium
/ru'bɪdiəm/ · rubɪdiəm
Rubidium has 4 syllables: ru · bid · i · um.
ru
01
bid
02
i
03
um
04
noun. 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.
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