Definition of tunic

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Tunic (n.) A membrane, or layer of tissue, especially when enveloping an organ or part, as the eye..

Lern More About Tunic

Acephala :: Acephala (n. pl.) That division of the Mollusca which includes the bivalve shells, like the clams and oysters; -- so called because they have no evident head. Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa. See Mollusca..
Tunic :: Tunic (n.) Any similar garment worm by ancient or Oriental peoples; also, a common name for various styles of loose-fitting under-garments and over-garments worn in modern times by Europeans and others..
Urochord :: Urochord (n.) The central axis or cord in the tail of larval ascidians and of certain adult tunicates.
Tunicated :: Tunicated (a.) Having each joint buried in the preceding funnel-shaped one, as in certain antennae of insects..
Salpa :: Salpa (n.) A genus of transparent, tubular, free-swimming oceanic tunicates found abundantly in all the warmer latitudes. See Illustration in Appendix..
Urochorda :: Urochorda (n. pl.) Same as Tunicata.
Neptunicentric :: Neptunicentric (a.) As seen from Neptune, or having Neptune as a center; as, Neptunicentric longitude or force..
Tunicle :: Tunicle (n.) A slight natural covering; an integument.
Desmomyaria :: Desmomyaria (n. pl.) The division of Tunicata which includes the Salpae. See Salpa.
Appendicularia :: Appendicularia (n.) A genus of small free-swimming Tunicata, shaped somewhat like a tadpole, and remarkable for resemblances to the larvae of other Tunicata. It is the type of the order Copelata or Larvalia. See Illustration in Appendix..
Tethyodea :: Tethyodea (n. pl.) A division of Tunicata including the common attached ascidians, both simple and compound. Called also Tethioidea..
Tunicle :: Tunicle (n.) A short, close-fitting vestment worn by bishops under the dalmatic, and by subdeacons..
Ascidioidea :: Ascidioidea (n. pl.) A group of Tunicata, often shaped like a two-necked bottle. The group includes, social, and compound species. The gill is a netlike structure within the oral aperture. The integument is usually leathery in texture. See Illustration in Appendix..
Cellulose :: Cellulose (n.) The substance which constitutes the essential part of the solid framework of plants, of ordinary wood, linen, paper, etc. It is also found to a slight extent in certain animals, as the tunicates. It is a carbohydrate, (C6H10O5)n, isomeric with starch, and is convertible into starches and sugars by the action of heat and acids. When pure, it is a white amorphous mass. See Starch, Granulose, Lignin..
Ascidian :: Ascidian (n.) One of the Ascidioidea, or in a more general sense, one of the Tunicata. Also as an adj..
Tabard :: Tabard (n.) A sort of tunic or mantle formerly worn for protection from the weather. When worn over the armor it was commonly emblazoned with the arms of the wearer, and from this the name was given to the garment adopted for heralds..
Tunicata :: Tunicata (n. pl.) A grand division of the animal kingdom, intermediate, in some respects, between the invertebrates and vertebrates, and by some writers united with the latter. They were formerly classed with acephalous mollusks. The body is usually covered with a firm external tunic, consisting in part of cellulose, and having two openings, one for the entrance and one for the exit of water. The pharynx is usually dilated in the form of a sac, pierced by several series of ciliated slits, and se
Chordata :: Chordata (n. pl.) A comprehensive division of animals including all Vertebrata together with the Tunicata, or all those having a dorsal nervous cord..
Ascidium :: Ascidium (n.) A genus of simple ascidians, which formerly included most of the known species. It is sometimes used as a name for the Ascidioidea, or for all the Tunicata..
Vermes :: Vermes (n. pl.) An extensive artificial division of the animal kingdom, including the parasitic worms, or helminths, together with the nemerteans, annelids, and allied groups. By some writers the branchiopods, the bryzoans, and the tunicates are also included. The name was used in a still wider sense by Linnaeus and his followers..
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