Dictionary![]() ![]() tet•ra•ba•sicPronunciation: (te"tru-bā'sik), [key] —adj. Chem. 1. (of an acid) having four atoms of hydrogen replaceable by basic atoms or groups. 2. containing four basic atoms or groups having a valence of one. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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