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crenation

American  
[kri-ney-shuhn] / krɪˈneɪ ʃən /

noun

  1. a rounded projection or tooth, as on the margin of a leaf.

  2. Anatomy.  (in erythrocytes) the state of being or becoming shrunken with a notched or indented edge.

  3. a notch between teeth.

crenation British  
/ ˈkriː-, krɪˈneɪʃən, ˈkrɛnəˌtjʊə /

noun

  1. any of the rounded teeth or the notches between them on a crenate structure

  2. 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

Etymology

Origin of crenation

First recorded in 1840–50; crenate + -ion

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.