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English definition of “diatomic”

diatomic

adjective     /ˌdaɪ.əˈtɒm.ɪk/ specialized
describes a molecule that consists of two atoms of the same type: The symbol for diatomic nitrogen is N2.Atoms, molecules and sub-atomic particles
(Definition of diatomic adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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