Definition of triatomic in English:

triatomic

adjective

Chemistry
  • Consisting of three atoms.

    • ‘Electron on-off switching in mercury triatomic clusters was demonstrated from quantum beat experiments.’
    • ‘A linear triatomic molecule would only be considered non-polar if it is symmetric through the central atom.’
    • ‘Oxygen, however, in addition to being diatomic can be found in a triatomic form called ozone.’

Pronunciation:

triatomic

/ˌtrʌɪəˈtɒmɪk/