rubidium

Valid in Scrabble

Scrabble points
13
Words With Friends
17
Letters
8
Pronunciation
/ˌɹuːˈbɪd.i.əm/ (UK)

Definition of rubidium

2 senses · 1 part of speech · etymology included

noun

  1. (uncountable)The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
See all 2 definitions

noun

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

Definitions from Wiktionary, CC BY-SA.

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.

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1 extension · 1 back

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