[ kri-ney-shuh n ]
/ krɪˈneɪ ʃən /


a rounded projection or tooth, as on the margin of a leaf.
Anatomy. (in erythrocytes) the state of being or becoming shrunken with a notched or indented edge.
a notch between teeth.

Origin of crenation

First recorded in 1840–50; crenate + -ion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for crenation


crenature (ˈkrɛnəˌtjʊə, ˈkriː-)

/ (krɪˈneɪʃən) /


any of the rounded teeth or the notches between them on a crenate structure
a crenate formation or condition
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 crenation


[ krĭ-nāshən ]


The condition or state of being crenate.
A process resulting from osmosis in which red blood cells, in a hypertonic solution, shrink and acquire a scalloped surface.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.