Definition of seta

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Seta (n.) One of the movable chitinous spines or hooks of an annelid. They usually arise in clusters from muscular capsules, and are used in locomotion and for defense. They are very diverse in form..

Lern More About Seta

Polychaeta :: Polychaeta (n. pl.) One of the two principal groups of Chaetopoda. It includes those that have prominent parapodia and fascicles of setae. See Illust. under Parapodia.
Setula :: Setula (n.) A small, short hair or bristle; a small seta..
Setiform :: Setiform (a.) Having the form or structure of setae.
Equiseta :: Equiseta (pl. ) of Equisetu.
Seta :: Seta (n.) Any slender, more or less rigid, bristlelike organ or part; as the hairs of a caterpillar, the slender spines of a crustacean, the hairlike processes of a protozoan, the bristles or stiff hairs on the leaves of some plants, or the pedicel of the capsule of a moss..
Horsetail :: Horsetail (n.) A Turkish standard, denoting rank..
Equisetaceous :: Equisetaceous (a.) Belonging to the Equisetaceae, or Horsetail family..
Aplacophora :: Aplacophora (n. pl.) A division of Amphineura in which the body is naked or covered with slender spines or setae, but is without shelly plates..
Chaetopoda :: Chaetopoda (n. pl.) A very extensive order of Annelida, characterized by the presence of lateral setae, or spines, on most or all of the segments. They are divided into two principal groups: Oligochaeta, including the earthworms and allied forms, and Polychaeta, including most of the marine species..
Horsetail :: Horsetail (n.) A leafless plant, with hollow and rushlike stems. It is of the genus Equisetum, and is allied to the ferns. See Illust. of Equisetum..
Gephyrea :: Gephyrea (n. pl.) An order of marine Annelida, in which the body is imperfectly, or not at all, annulated externally, and is mostly without setae..
Seta :: Seta (n.) One of the spinelike feathers at the base of the bill of certain birds.
Setiger :: Setiger (n.) An annelid having setae; a chaetopod.
Setiparous :: Setiparous (a.) Producing setae; -- said of the organs from which the setae of annelids arise.
Calamite :: Calamite (n.) A fossil plant of the coal formation, having the general form of plants of the modern Equiseta (the Horsetail or Scouring Rush family) but sometimes attaining the height of trees, and having the stem more or less woody within. See Acrogen, and Asterophyllite..
Moha :: Moha (n.) A kind of millet (Setaria Italica); German millet.
Setaceous :: Setaceous (a.) Set with, or consisting of, bristles; bristly; as, a stiff, setaceous tail..
Trichophore :: Trichophore (n.) One of the saclike organs from which the setae of annelids arise.
Setae :: Setae (pl. ) of Set.
Isosporic :: Isosporic (a.) Producing but one kind of spore, as the ferns and Equiseta. Cf. Heterosporic..
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