Dictionary

triatomic

adjective tri·atom·ic \ˌtrī-ə-ˈtä-mik\

Definition of TRIATOMIC

:  having three atoms in the molecule <ozone is triatomic oxygen>

Origin of TRIATOMIC

International Scientific Vocabulary
First Known Use: 1862

triatomic

adjective tri·atom·ic \ˌtrī-ə-ˈtäm-ik\   (Medical Dictionary)

Medical Definition of TRIATOMIC

:  having three atoms in the molecule <ozone is triatomic oxygen>

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