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Definition of Atomic number 1
1. Noun. 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.
Exact synonyms: H, Hydrogen
Specialized synonyms: Tritium
Generic synonyms: Chemical Element, Element, Gas
Substance meronyms: H2o, Water
Derivative terms: Hydrogenate
Specialized synonyms: Tritium
Generic synonyms: Chemical Element, Element, Gas
Substance meronyms: H2o, Water
Derivative terms: Hydrogenate
Lexicographical Neighbors of Atomic Number 1
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