[ vey-luh n-see ]
/ ˈveɪ lən si /

noun, plural va·len·cies. Chemistry. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for valency

British Dictionary definitions for valency


esp US and Canadian valence

/ (ˈveɪlənsɪ) /

noun plural -cies or -ces

chem a property of atoms or groups, equal to the number of atoms of hydrogen that the atom or group could combine with or displace in forming compounds
linguistics the number of satellite noun phrases with which a verb combinesthe English verb `give' takes a subject and two objects, so it has a valency of three
  1. the number of antigen-binding sites on an antibody molecule
  2. the number of antigen-binding sites with which an antigen can combine

Word Origin for valency

C19: from Latin valentia strength, from valēre to be strong
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