Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of polyatomic is as below...

Polyatomic :: Polyatomic (a.) Having a valence greater than one.

Poly- :: Poly- (a.) A combining form or prefix from Gr. poly`s, many; as, polygon, a figure of many angles; polyatomic, having many atoms; polychord, polyconic..

Polyatomic :: Polyatomic (a.) Having more than one atom in the molecule; consisting of several atoms.

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