atomic number 3 is a noun meaning "a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals". It carries one recorded sense.
a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
Definitions, synonyms and semantic relations for atomic number 3 come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.