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Webster 1913 Edition
Tetratomic
Tetˊra-tom′ic
,Adj.
[
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.