Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.


(krĕn′yə-lĭt, -lāt′) or


Having a margin or contour with shallow, usually rounded notches and projections; finely notched or scalloped: a crenulate leaf; a crenulate coastline.

cren′u·la′tion n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
Antennal flagellum weakly crenulate on posterior surface, without deep concavity between flagellomeres; mandible distinctly broad apically; posterior hypostomal carina with strong tooth; protibial spur with apex long, about three-fourths of malus length, with a distinct row of 10 elongate branches (not including apical portion of rachis); S3-S4 with distal margins gently convex; S5 with midapical row of spines straight, not medially projecting (Ecuador: Napo).
Apothecia sessile or constricted at base, scattered or in groups, (0.25)0.5-1.5(-2) mm diam.; disc crimson, purple-red to orange-red, epruinose, thalline margin slightly prominent, smooth, crenulate to verrucose, even crenulate or flexuose.
Elytra oval-elongate, feebly widened posteriorly, striae rather deep, distinctly punctured, feebly crenulate; interstices flat, almost imperceptibly sparsely punctured.
Pronotal disc with shallow, small punctures regularly separated and distributed on disc, but less dense near midline; lateral margins obtusely angled, widest behind middle; lateral marginal bead irregularly crenulate, with long, slender setae; anterior marginal bead without setae; anterior angles obtuse, not prominent; posterior angles broadly obtuse, rounded.
Mesonotum with central portion slightly raised, rounded and set with a pair or cluster of crenulate transverse carinae, wart-like struma, [+ or -] prominent crenulate or dentate lobes or long spiniform processes, some of which may be bifid.
Fruiting perianth with corolla 9-14 mm long, cup-shaped, deeply crenate, brown setose in the distal part; staminodial ring shaped as a regular disk, minutely crenulate, 5-8 mm long; calyx 3-9 mm long, glabrous, divided in 3-5 lobes, limb usually ivory-white, brown distally.
N rosette at posterior end of body (114) N funnel connecting with rosette short (115) N funnel narrow (116) N antero-lateral genital notch present (117) F body margins crenulate (118) N body spines small over most of body, large at pharyngeal
Scales of body cycloid, relatively large, and arranged in regular horizontal rows; scale margins weakly crenulate; predorsal scales extending forward to about middle of interorbital space or slightly posterior; preopercle with 2-3 scale rows between its posterior angle and eye.
Vagina very long and slender with muscular wall; attached laterally to body wall by a well-developed series of muscle fibres; merges with free oviduct at origin of bursa copulatrix duct; interior wall of vagina with weakly crenulate, longitudinal ridges.
martensii, the ventromedian carinae of the metasomal segment II and III are crenulate and the granules are evenly developed; the ventrolateral carinae of the metasomal segment V are serratocrenulate and the granules are evenly developed or slightly increasing in size posteriorly; the pedipalp chela is slender with Cl/Cw = 4.45 [+ or -] 0.23 (Cl = chela length, Cw = chela width, mean [+ or -] SD, n = 65) for the female and 3.71 [+ or -] 0.24 (n = 43) for the male, and both the fixed finger and the movable finger having 12-13 rows of oblique granules.