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, pl.


(sē'tă, -tē),
A bristle or a slender, stiff, bristle-like structure.
Synonym(s): chaeta
[L. saeta or seta, a stiff hair or bristle]
Farlex Partner Medical Dictionary © Farlex 2012


n. pl. chae·tae (-tē′)
A bristle or seta, especially of an annelid worm.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.




a bristle-like structure, often chitinous (see CHITIN). The structures are found particularly in ANNELID worms, where they occur as projections on most segments, and serve as anchors for that segment during locomotion.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Each chaetiger bearing one serrated dorsal simple chaeta and 3-6 bidentate falcigerous chaetae.
abadensis by lacking an acicular chaeta in the chaetiger 11 in males (Riera et al., 2007).
Single, fine companion chaeta accompanying hooded hooks only on last three chaetigers of paratype.
III sensory organ; chaeta d0 on head absent; maxillary palp without sublobal hair; 1 guard chaeta on labial papilla E, chaetae in distal row of tibiotarsi as 7.
Thorax chaetotaxy: T1 without Mc; T2 area on Th II with 1 Mc ([a.sub.5]); [m.sub.5] and an additional chaeta besides [a.sub.5] are mesochaetae (Fig.
The effects of inbreeding on body weight and abdominal chaeta number in Drosophila melanogaster.
Maxillary outer lobe with simple palp, basal chaeta and with two sublobal hairs.
Number of chaeta decreasing progresively from eight in anterior parapodia to six in posterior ones.
The genus is characterized by the shape of the postantennal organ with numerous (11-20), compound vesicles, antennal III sense organ with 5 papillae and 2 ribbed sensory clubs, the presence of the chaeta d0 on head and chaeta p0 on abdominal tergum IV, abdominal tergum VI with 1 medial chaeta, tibiotarsal distal whorl with 9 chaetae, furcal area with 2+2 chaeta in 1 row (Weiner 1996; Pomorski 1998) and usually 2 manubrial rows mm and mp, chaetae from the ma row displaced on the level of dental microchaetae, male ventral organ usually present and anal spines absent.