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 (krĕn′yə-lĭt, -lāt′) or cren·u·lat·ed (-lā′tĭd)
Having a margin or contour with shallow, usually rounded notches and projections; finely notched or scalloped: a crenulate leaf; a crenulate coastline.

[New Latin crēnulātus, from crēnula, diminutive of Medieval Latin crēna, notch.]

cren′u·la′tion n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Biology) any of the teeth or notches of a crenulate structure
2. (Biology) a crenulate formation
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌkrɛn yəˈleɪ ʃən)

1. a minute crenation.
2. the state of being crenulate.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
A weak crenulation developed in the cleavage domain, but it is not penetrative in the section.
Molar crenulation trait definition and variation in modern human populations.
Additionally, after confession, when Humanum Genus enters the castle, he "symbolically enters the local church," as visual echoes between the castle and with the crenulation common on local East Anglian churches might suggest (91).
D2 locally formed a steep NW [+ or -] SE trending crenulation cleavage, and small scale subvertical sinistral-verging folds.
Close to the contact, the fabric in micaceous rocks typically shows the development of a new crenulation cleavage overprinting the generally planar foliation, and more quartz-rich rocks display moderate to strong cataclasis with undulose extinction and bent mica grains (Fig.
Well developed muscovite psuedomorphs are numerous in the rocks and arranged in the direction of crenulation cleavages in the matrix.
T1 with weak longitudinal crenulation and three slightly more prominent longitudinal carinae.
The crenulation is more symmetrically distributed around the platform and slightly more developed than that of the plastron tubercles, with some of the nodules enlarged and forming small ridges (Figure 4(d)).
(iii) Crenulations: effect of crenulation cleavage on the main schistosity planes.
is different from that of Marenestha inconspicua, being longer and evenly up-curved instead of short and suddenly up-curved, with different crenulation of dorsal and ventral margins, more similar to the ovipositor of some species of Dichopetala.