frenulum

[ fren-yuh-luh m ]
/ ˈfrɛn yə ləm /

noun, plural fren·u·la [fren-yuh-luh] /ˈfrɛn yə lə/.

Anatomy, Zoology. a small frenum.
Entomology. a strong spine or group of bristles on the hind wing of many butterflies and moths, projecting beneath the forewing and serving to hold the two wings together in flight.
Also fraenulum.

Origin of frenulum

From New Latin, dating back to 1890–95; see origin at frenum, -ule

Related forms

fren·u·lar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for frenulum

frenulum

/ (ˈfrɛnjʊləm) /

noun plural -la (-lə)

a strong bristle or group of bristles on the hind wing of some moths and other insects, by which the forewing and hind wing are united during flight
a small fraenum

Word Origin for frenulum

C18: New Latin, diminutive of Latin frēnum bridle
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 frenulum

frenulum

[ frĕnyə-ləm ]

n. pl. fren•u•la (-lə)

A small frenum or band of fibrous material.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.