a combining form meaning “icy cold,” “frost,” used in the formation of compound words: cryogenics.

Origin of cryo-

combining form representing Greek krýos Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for cryo-


combining form

indicating low temperature; frost, cold, or freezingcryogenics; cryosurgery

Word Origin for cryo-

from Greek kruos icy cold, frost
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

Word Origin and History for cryo-


word-forming element meaning "very cold, freezing," from Latinized form of Greek kryo-, comb. form of kryos "icy cold," related to kryeros "chilling" (see crust (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for cryo-



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