quadrivalent

[kwod-ruh-vey-luh nt, kwo-driv-uh-]
adjective Chemistry.
  1. having a valence of four; tetravalent.
  2. exhibiting four different valences, as antimony with valences of 5, 4, 3, and −3.

Origin of quadrivalent

First recorded in 1860–65; quadri- + -valent
Related formsquad·ri·va·lence, quad·ri·va·len·cy, nounquad·ri·va·lent·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for quadrivalent

quadrivalent

adjective
  1. chem another word for tetravalent
Derived Formsquadrivalency or quadrivalence, noun
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

quadrivalent in Medicine

quadrivalent

[kwŏd′rə-vālənt]
adj.
  1. Having four valences.
  2. Having a valence of four; tetravalent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.