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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 ?
Phyllomyza Fallen, 1810 (Milichiidae: Phyllomyzinae) is characterized by the following features: 3 lateroclinate orbital setae; occiput not strongly concave in top view; palpus and 1st flagellomere in male usually greatly enlarged, longer than broad; lunule usually with a pair of setae (Brake 2000).
The antennules have aesthetascs and simple plumose and pappose setae; the antennae have simple, plumose and pappose setae.
Contract notice: Reclamation landfill for non-hazardous and inert trzesiece - setae city.
The long antennular aesthetascs and the long plumose natatory setae of the first and second maxillipeds have been drawn truncated.
DIAGNOSIS: Randallophorus is distinguished from other Pilophorini by the broad impunctate head; the strongly campanulate or bell-shaped, impunctate pronotum, with a large quadrate velvety spot on each callus; the slender subparallel body; the slender antennae; the scattered whitish, scalelike setae on the dorsum, ventrally on the pro-, meso-, and metapleura areas, abdomen, and ar the bases of the coxae; the simple ostiolar auricle with a wide scent channel lacking a distinct knob dorsally; and the simple, S-shaped endosoma lacking an apparent secondary gonopore.
brucei: exopodite of A2 2-segmented with 4 setae, mandibular palp 1-segmented with 4 setae, the first segment of endopodite P2 with setae on inner side, abdominal somites with continuous row of spines edged on dorsal and discontinuous (of female) in the medial row of some longer spines on ventral side.
Knowing that geckos replace lost setae when they moult, Autumn, his postdoc Jonathan Puthoff, and Matt Wilkinson collected patches of the 'sticky' hairs from gecko feet and attached them to a mechanical testing device, known as 'Robotoe', that reproduces the way the reptile drags its foot as it contacts a surface.
The plural is setae and, these hairs would come in useful for an earthworm which, for example, would make it difficult to pull from the ground.
Stickybot, like a gecko, climbs by taking advantage of directional adhesion between its setae and a wall.
30) is formed by numerous rigid setae, sorted in two size classes: approximately 15-20 mm long, robust setae, placed in one wide series (the middle setae are the longest and strongest ones, bearing a distinctly club-shaped apex on each one), and 50 or more shorter, thinner setae, disposed in several smaller series.
The little lizard owes its gravity-defying powers to carpets of microscopic hairs, called setae, covering its feet.
The setae on the bottom of a gecko's feet are only 100 [micro]m long.