- 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.
Origin of retinaculum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for retinaculum
Most, however, have four, the leaf stomach or psalterium being intercalated between the retinaculum and the abomasum.The Anatomy of the Human Peritoneum and Abdominal Cavity
George. S. Huntington
The retinaculum is not correctly represented in this figure, it arises from the anterior side of the sub-costal nervure.Discoveries in Australia, Volume 1.
J Lort Stokes
This process is termed the retinaculum, and serves, in conjunction with the frenulum, to lock the wings together during flight.
In many of the Lepidoptera both frenulum and retinaculum are entirely wanting.
- 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
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
- A band or bandlike structure that holds an organ or a part in place.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.