Definitions and Synonyms of atomic number 1 | Another word for atomic number 1 | What is atomic number 1?
Definition 1: 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 - [noun denoting substance]
Synonyms for atomic number 1 in the sense of this definition
(atomic number 1 is a kind of ...) any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
(... is made of the substance atomic number 1) binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent