Rubidium Definition

rubidium
noun
  1. 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

Usage tips for "rubidium"

Understanding the precise definition of a word helps you use it with confidence. When using "rubidium" in your writing, consider whether you need the word itself or one of its synonyms — subtle differences in meaning can change the tone of a sentence. If you're writing poetry or song lyrics, check the rhymes for rubidium to find words that pair well.

Look up another word