'Tetratomic' definitions:

Definition of 'Tetratomic'

From: GCIDE
  • Tetratomic \Tet`ra*tom"ic\, a. [Tetra- + atomic.] (Chem.) (a) Consisting of four atoms; having four atoms in the molecule, as phosphorus and arsenic. (b) Having a valence of four; quadrivalent; tetravalent; sometimes, in a specific sense, having four hydroxyl groups, whether acid or basic. [1913 Webster]