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n. pl. se·tae (-tē)
1. A stiff hair, bristle, or bristlelike process or part on an organism, especially an invertebrate.
2. The stalk of a moss or liverwort capsule.

[Latin saeta, sēta, bristle.]

se′tal (sēt′l) adj.


n, pl -tae (-tiː)
1. (Biology) (in invertebrates and some plants) any bristle or bristle-like appendage
2. (Botany) (in mosses) the stalk of the sporophyte that bears the capsule
[C18: from Latin]
setaceous adj
seˈtaceously adv
ˈsetal adj


(ˈsi tə)

n., pl. -tae (-tē).
a stiff hair; bristle or bristlelike part.
[1785–95; < Latin sēta, saeta bristle]
se′tal, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.seta - stalk of a moss capsule
podetium - an organ or body resembling a stalk; especially the outgrowth of the thallus of certain lichens on which the ascocarp is borne
2.seta - a stiff hair or bristle
hair - a filamentous projection or process on an organism
chaeta - a stiff chitinous seta or bristle especially of an annelid worm
References in periodicals archive ?
The number of setae on the margin of the telson in the first and second stages is variable: 11+12, 12+12, or 11+11.
Antenna with a fan of 4-5 long needle-like setae, arising distally from second proximal exopodial segment, with two additional needle-like setae on first proximal segment.
Larval morphological characteristics that distinguish Reesa from related genera Megatoma and Trogoderma were given by Peacock (1993) and by Beal (1967; 1991), and are mainly expressed by the length of setae of the tarsungulus (pretarsus), the number and morphology of the middle 4 setae of the labro-epipharyngeal margin, and the morphology of the acrotergites.
On the scutum there are no inter medial setae between the sensilla.
Chaetotaxy of tubercles Oc and (Di + De) reduced on head, with only 6 setae (Ocm, Di1 and De2) and setae Oca, Ocp, Di2 and De2 absent.
Maxillule with well-developed arthrite bearing four distal multicuspidate spines and three pinnate setae, and one surface seta; coxal endite, basis, exopod and endopod fused, with seven setae in all.
Dorsal shield with 28 pairs of setae, most setae distally pilose; setae j1, j6, J2, J5, z1, z5, z6 smooth and needlelike.
8 long setae; gonostylus with a pair of spiniform proximal setae located at about the same level, one median spiniform seta inserted near the proximal setae and distant from the two apical spiniform setae, without subapical fine seta; paramere narrow at middle, with the apical portion broader apex rounded pointed and with a triangular small projection in the ventral edge near the apex, basally with a dorsal spinose rounded lobe; lateral lobe thin; ejaculatory ducts with lanceolate apex.