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n. pl. chae·tae (-tē′)
A bristle or seta, especially of an annelid worm.

[New Latin, from Greek khaitē, long hair.]


n, pl -tae (-tiː)
(Zoology) any of the chitinous bristles on the body of such annelids as the earthworm and the lugworm: used in locomotion; a seta
[C19: New Latin, from Greek khaitē long hair]


(ˈki tə)

n., pl. -tae (-tē).
a bristle or seta, esp. of an annelid worm.
[1860–65; < New Latin < Greek chaítē long hair]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chaeta - a stiff chitinous seta or bristle especially of an annelid worm
seta - a stiff hair or bristle
References in periodicals archive ?
Redescription of four Polish Endonura Cassagnau, 1979 (Collembola, Neanuridae, Neanurinae), with a nomenclature of the ventral chaetae of antennae.
the blades of the long chaetae are denticulate, but their number is only evident with a more powerful enlargement].
the estimation of earthworms' chaetae (Kleintjes & Dahlsten 1992, Scheiffarth 2001, Hounsome et al.
From the lack of any hard structures and accessory morphological features such as chaetae and jaws, there is a systematic difficulty not only in the genus Protodrilus but also in the family Protodrilidae and associated families (Westheide, 1985; Fauchald and Rouse, 1997; Rouse and Fauchald, 1997).
For example, exceptional fossils of the coiled helcionellid Pelagiella preserve chaetae (Thomas et al.
bimagnasetus is the occurrence in the ventral bundles of III of a single giant chaetae and 1 or 2 giant chaetae in the ventral bundle of IV (see in Figure 3 and Figure 4).
Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin.
The genus is characterized by long hose-like atria, vestigial vasa deferentia, small or completely lacking prostate glands, and presence (in most species) of simple-pointed and distally grooved, often nib-shaped, spermathecal chaetae (Fig.
Indeed, there are similarities in outline and microstructure to particular extracellular 'tough parts' in living polychaete annelids, including the fans of abdominal chaetae in various sabellids (although the Mount Cap elements are not fused proximally; cf.
The shell-boring polychaete species were identified on the basis of fifth setiger chaetae, prostomium and pygidium morphology, and branchiae distribution.