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abdominal
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- Abdominal - a. - Of or pertaining to the abdomen; ventral; as, the abdominal regions, muscles, cavity.
- Abdominal - a. - Having abdominal fins; belonging to the Abdominales; as, abdominal fishes.
- Abdominal - n. - A fish of the group Abdominales.
- Abdominales - pl. - of Abdominal
- Abdominales - n. pl. - A group including the greater part of fresh-water fishes, and many marine ones, having the ventral fins under the abdomen behind the pectorals.
- Abdominalia - n. pl. - A group of cirripeds having abdominal appendages.
- Abdominals - pl. - of Abdominal
- Stomapoda - n. pl. - An order of Crustacea including the squillas. The maxillipeds are leglike in form, and the large claws are comblike. They have a large and elongated abdomen, which contains a part of the stomach and heart; the abdominal appendages are large, and bear the gills. Called also Gastrula, Stomatopoda, and Squilloidea.
- Abdominal - a. - Having abdominal fins; belonging to the Abdominales; as, abdominal fishes.
- Symphyla - n. pl. - An order of small apterous insects having an elongated body, with three pairs of thoracic and about nine pairs of abdominal legs. They are, in many respects, intermediate between myriapods and true insects.
- Mesovarium - n. - The fold of peritoneum connecting the ovary with the wall of the abdominal cavity.
- Uromere - n. - Any one of the abdominal segments of an arthropod.
- Pleopod - n. - One of the abdominal legs of a crustacean. See Illust. under Crustacea.
- Swimmeret - n. - One of a series of flat, fringed, and usually bilobed, appendages, of which several pairs occur on the abdominal somites of many crustaceans. They are used as fins in swimming.
- Abdominal - a. - Of or pertaining to the abdomen; ventral; as, the abdominal regions, muscles, cavity.
- Cavity - n. - A hollow place; a hollow; as, the abdominal cavity.
- Mesogaster - n. - The fold of peritoneum connecting the stomach with the dorsal wall of the abdominal cavity; the mesogastrium.
- Hernia - n. - A protrusion, consisting of an organ or part which has escaped from its natural cavity, and projects through some natural or accidental opening in the walls of the latter; as, hernia of the brain, of the lung, or of the bowels. Hernia of the abdominal viscera in most common. Called also rupture.
- Mesohepar - n. - A fold of the peritoneum connecting the liver with the dorsal wall of the abdominal cavity.
- Cremaster - n. - The apex of the last abdominal segment of an insect.
- Caterpillar - n. - The larval state of a butterfly or any lepidopterous insect; sometimes, but less commonly, the larval state of other insects, as the sawflies, which are also called false caterpillars. The true caterpillars have three pairs of true legs, and several pairs of abdominal fleshy legs (prolegs) armed with hooks. Some are hairy, others naked. They usually feed on leaves, fruit, and succulent vegetables, being often very destructive, Many of them are popularly called worms, as the cutworm, cankerworm, army worm, cotton worm, silkworm.
- Proleg - n. - One of the fleshy legs found on the abdominal segments of the larvae of Lepidoptera, sawflies, and some other insects. Those of Lepidoptera have a circle of hooks. Called also proped, propleg, and falseleg.
- Abdominalia - n. pl. - A group of cirripeds having abdominal appendages.
- Uropod - n. - Any one of the abdominal appendages of a crustacean, especially one of the posterior ones, which are often larger than the rest, and different in structure, and are used chiefly in locomotion. See Illust. of Crustacea, and Stomapoda.