[ trahy-bey-sik ]
/ traɪˈbeɪ sɪk /

adjective Chemistry.

(of an acid) having three atoms of hydrogen replaceable by basic atoms or groups.
containing three atoms or groups, each having a valence of one, as tribasic sodium phosphate, Na3PO4.

Nearby words

  1. tribadic,
  2. tribadism,
  3. tribal,
  4. tribalism,
  5. tribally,
  6. tribasic sodium phosphate,
  7. tribe,
  8. tribeca,
  9. tribelet,
  10. tribesman

Origin of tribasic

First recorded in 1830–40; tri- + basic

Related formstri·ba·sic·i·ty [trahy-bey-sis-i-tee] /ˌtraɪ beɪˈsɪs ɪ ti/, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tribasic

British Dictionary definitions for tribasic


/ (traɪˈbeɪsɪk) /


(of an acid) containing three replaceable hydrogen atoms in the molecule
(of a molecule) containing three monovalent basic atoms or groups in the molecule
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for tribasic


[ trī-bāsĭk ]


Relating to an acid containing three replaceable hydrogen atoms per molecule.
Relating to a base or salt containing three univalent basic atoms or radicals per molecule.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.