▶ USAGE: Although both the Greek set of prefixes (mono-, di-, tri-, tetra-, penta-, etc.) and the Latin (uni-, bi-, ter-, quadri-, quinque-, etc.) are used with -valent, the Latin set is preferred when designating the number of valences an element exhibits
and the Greek when designating the specific valence of some atom or radical 2. having a specified number of valences
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.