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We found 11 dictionaries with English definitions that include the word atomic number 1: Click on the first link on a line below to go directly to a page where "atomic number 1" is defined. General (9 matching dictionaries) atomic number_1: Vocabulary.com [home, info] atomic number_1: Dictionary.com [home, info] Atomic number 1: Wikipedia, the Free Encyclopedia [home, info] Atomic number 1: Rhymezone [home, info] atomic number_1: Free Dictionary [home, info] atomic number_1: Mnemonic Dictionary [home, info] atomic number_1: WordNet 1.7 Vocabulary Helper [home, info] atomic number_1: LookWAYup Translating Dictionary/Thesaurus [home, info] atomic number_1: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) atomic number_1: Encyclopedia [home, info] Medicine (1 matching dictionary) atomic number_1: Medical dictionary [home, info]

Quick definitions from WordNet (Atomic number 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