[ ret-n-ak-yuh-luhm ]
/ ˌrɛt nˈæk yə ləm /
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noun, plural ret·i·nac·u·la [ret-n-ak-yuh-luh]. /ˌrɛt nˈæk yə lə/.
Anatomy, Zoology. any of various small structures that hook, clasp, or bind other structures to move them or hold them in place.
Entomology. a bristle on the butterfly forewing that clasps to the frenulum of the hindwing.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
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Origin of retinaculum

1815–25; <New Latin; Latin retināculum tether, rope which holds fast or restrains, equivalent to retin(ēre) to hold fast, retain + -ā- (from v. stems ending in -ā-;cf. gubernaculum) + -culum-cule2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use retinaculum in a sentence

British Dictionary definitions for retinaculum

/ (ˌrɛtɪˈnækjʊləm) /

noun plural -la (-lə)
connection or retention or something that connects or retains
zoology a small hook that joins the forewing and hind wing of a moth during flight

Derived forms of retinaculum

retinacular, adjective

Word Origin for retinaculum

C18 (a surgical instrument used in castration): Latin, from rētinēre to hold back
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

Medical definitions for retinaculum

[ rĕt′n-ăkyə-ləm ]

n. pl. ret•i•nac•u•la (-lə)
A band or bandlike structure that holds an organ or a part in place.

Other words from retinaculum

ret′i•nacu•lar (-lər) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.