atomic number 1 is a noun meaning "a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe". It carries one recorded sense.
a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
Definitions, synonyms and semantic relations for atomic number 1 come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.