Acanthopteri :: Acanthopteri (n. pl.) A group of teleostean fishes having spiny fins. See Acanthopterygii.

Acanthopterous :: Acanthopterous (a.) Spiny-winged.

Acanthopterous :: Acanthopterous (a.) Acanthopterygious.

Acanthopterygian :: Acanthopterygian (a.) Belonging to the order of fishes having spinose fins, as the perch..

Acanthopterygian :: Acanthopterygian (n.) A spiny-finned fish.

Acanthopterygii :: Acanthopterygii (n. pl.) An order of fishes having some of the rays of the dorsal, ventral, and anal fins unarticulated and spinelike, as the perch..

Acanthopterygious :: Acanthopterygious (a.) Having fins in which the rays are hard and spinelike; spiny-finned.

Accepter :: Accepter (n.) A person who accepts; a taker.

Accepter :: Accepter (n.) A respecter; a viewer with partiality.

Accepter :: Accepter (n.) An acceptor.

Adapter :: Adapter (n.) One who adapts.

Adapter :: Adapter (n.) A connecting tube; an adopter.

Adopter :: Adopter (n.) One who adopts.

Adopter :: Adopter (n.) A receiver, with two necks, opposite to each other, one of which admits the neck of a retort, and the other is joined to another receiver. It is used in distillations, to give more space to elastic vapors, to increase the length of the neck of a retort, or to unite two vessels whose openings have different diameters..

Aphaniptera :: Aphaniptera (n. pl.) A group of wingless insects, of which the flea in the type. See Flea..

Aphanipterous :: Aphanipterous (a.) Of or pertaining to the Aphaniptera.

Aptera :: Aptera (n. pl.) Insects without wings, constituting the seventh Linnaen order of insects, an artificial group, which included Crustacea, spiders, centipeds, and even worms. These animals are now placed in several distinct classes and orders..

Apteral :: Apteral (a.) Apterous.

Apteral :: Apteral (a.) Without lateral columns; -- applied to buildings which have no series of columns along their sides, but are either prostyle or amphiprostyle, and opposed to peripteral..

Apteran :: Apteran (n.) One of the Aptera.

Apteria :: Apteria (n. pl.) Naked spaces between the feathered areas of birds. See Pteryliae.

Apterous :: Apterous (a.) Destitute of wings; apteral; as, apterous insects..

Apterous :: Apterous (a.) Destitute of winglike membranous expansions, as a stem or petiole; -- opposed to alate..

Apteryges :: Apteryges (n. pl.) An order of birds, including the genus Apteryx..

Apteryx :: Apteryx (n.) A genus of New Zealand birds about the size of a hen, with only short rudiments of wings, armed with a claw and without a tail; the kiwi. It is allied to the gigantic extinct moas of the same country. Five species are known..

Archaeopteryx :: Archaeopteryx (n.) A fossil bird, of the Jurassic period, remarkable for having a long tapering tail of many vertebrae with feathers along each side, and jaws armed with teeth, with other reptilian characteristics..

Archipterygium :: Archipterygium (n.) The primitive form of fin, like that of Ceratodus..

Attempter :: Attempter (n.) One who attempts; one who essays anything.

Attempter :: Attempter (n.) An assailant; also, a temper..

Basipterygium :: Basipterygium (n.) A bar of cartilage at the base of the embryonic fins of some fishes. It develops into the metapterygium.

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