- a stiff hair; bristle or bristlelike part.
Origin of seta
First recorded in 1785–95, seta is from the Latin word sēta, saeta bristle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for setae
Two setae are located on the vertex and two on the occupit of head.
No other member of the group is known to have any trace of setae or parapodia at any stage of development.
Setae dark amber to nearly ferruginous, darker than usual in squamatus.
Setae numerous; the appendage short, falcate, with tip simple, but a slender tooth near middle of curved edge.
Setae all simple, limbate, in a single series of mostly six in the middle region of the body.
- (in invertebrates and some plants) any bristle or bristle-like appendage
- (in mosses) the stalk of the sporophyte that bears the capsule
C18: from Latin
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
Word Origin and History for setae
plural setae, 1793, from Latin seta "bristle," from PIE root *sai- "to tie, bind" (see sinew). Related: Setaceous.
Online Etymology Dictionary, © 2010 Douglas Harper
- A stiff hair, bristle, or bristlelike process or part.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A stiff hair, bristle, or bristlelike process or part on an organism. Setae on the bodies of spiders are used as sensory organs, while setae on the bodies of many polychaete worms, such as earthworms, are used for locomotion. Microscopic setae on the feet of geckos allow adhesion to vertical surfaces.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.