English Explanatory Dictionary

rubidium

English dictionary entry

Meanings

noun
  1. The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
  2. A single atom of this element.

Pronunciation

ro͞obĭd'ēəm /ˌɹuːˈbɪd.i.əm/ LL-Q1860 (eng)-Vealhurl-rubidium.wav LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-rubidium.wav

Word forms

rubidium rubidiums

Etymology

A New Latin word derived by German chemist R. W. Bunsen in 1861, from Latin rūbidus (“red”) because its spectrum has two red lines.

Related words

rubidic rubidian

Derived words

dirubidium iodrubidium monorubidium organorubidium radiorubidium rubidide rubidium auride rubidium chloride rubidium hydroxide rubidium nitrate rubidium oxide rubidium-strontium trirubidium
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