n. 1. type genus of the family Acanthuridae; doctorfishes.
Syn. -- genus Acanthurus [ WordNet 1.5 ]

n. 1. 1 a genus comprising the lesser pandas.
Syn. -- genus Ailurus. [ WordNet 1.5 ]

n. 1. 1 the type genus of the Ameiuridae: bullhead catfishes.
Syn. -- genus Ameiurus. [ WordNet 1.5 ]

n. 1. 1 a genus of extinct dinosaurs comprising the brontosaurs; apatosaurs.
Syn. -- genus Apatosaurus. [ WordNet 1.5 ]

n. [ L. Arcturus, Gr. &unr_; bearward, equiv. to &unr_;; &unr_; bear + &unr_; ward, guard. See Arctic. ] (Anat.) A fixed star of the first magnitude in the constellation Boötes. [ 1913 Webster ]

☞ Arcturus has sometimes been incorrectly used as the name of the constellation, or even of Ursa Major. [ 1913 Webster ]

Canst thou guide Arcturus with his sons [ Rev. Ver.: “the Bear with her train” ]. Job xxxviii. 32. [ 1913 Webster ]

‖n. [ NL., fr. Gr. bronth` thunder + say^ros lizard. ] (Paleon.) A genus of large sauropod American dinosaurs of the jurassic era, or an individual of that genus. A length of sixty feet is believed to have been attained by these reptiles. The genus is also called Apatosaurus, and individuals of the genus are also called brontosaurs. [ 1913 Webster +PJC ]

n. a genus of lizards including the the zebra-tailed lizard.
Syn. -- genus Callisaurus. [ WordNet 1.5 ]

‖n. [ NL. fr. Gr. &unr_; a vaulted chamber + &unr_; lizard. ] (Paleon.) A genus of gigantic American Jurassic dinosaurs, having large cavities in the bodies of the dorsal vertebræ. [ 1913 Webster ]

n. a conspicuous constellation in the southern hemisphere near the Southern Cross.
Syn. -- Centaur, The Centaur. [ WordNet 1.5 ]

‖n. [ NL., fr. Gr. ke`ras a horn + &unr_; lizard. ] (Paleon.) A swift-running bipedal carnivorous American Jurassic dinosaur allied to the European Megalosaurus. The animal was nearly twenty feet in length, and the skull bears a bony short horn between the nostrils on the united nasal bones. See Illustration in Appendix. [ 1913 Webster + WordNet 1.5 ]

n. a genus of frilled lizards.
Syn. -- genus Chlamydosaurus. [ WordNet 1.5 ]

‖n. [ NL. fr. Gr. koino`s common + o'yra` tail. ] (Zool.) The larval stage of a tapeworm (Tænia cœnurus) which forms bladderlike sacs in the brain of sheep, causing the fatal disease known as water brain, vertigo, staggers or gid. [ 1913 Webster ]

☞ This bladder worm has on its surface numerous small heads, each of which, when swallowed by a dog, becomes a mature tapeworm in the dog's intestine. [ 1913 Webster ]

n. the type genus of the family Dasyuridae: native cats.
Syn. -- genus Dasyurus. [ WordNet 1.5 ]

n. an extinct heavy-bodied reptile of the late Paleozoic having a dorsal sail or crest. [ WordNet 1.5 ]

‖n. [ NL., fr. Gr. &unr_; a metal plate + &unr_; a lizard. ] (Paleon.) An extinct, long-necked, marine, cretaceous reptile from Kansas, allied to Plesiosaurus. [ 1913 Webster ]

‖n. [ NL., fr. Gr. 'hw`s dawn + say^ros lizard. ] (Paleon.) An extinct marine reptile from the coal measures of Nova Scotia; -- so named because supposed to be of the earliest known reptiles. [ 1913 Webster ]

‖n. [ L., gr. &unr_;. ] The east wind. [ 1913 Webster ]

‖n. [ NL., fr. Gr. "adro`s thick + say^ros lizard.] (Paleon.) An American herbivorous dinosaur of great size, allied to the iguanodon. It is found in the Cretaceous formation. [1913 Webster]

{ ‖ } n. [ NL. hylaeosaurus, fr. Gr. &unr_; belonging to a forest (fr. &unr_; wood) + &unr_; a lizard. ] (Paleon.) A large Wealden dinosaur from the Tilgate Forest, England. It was about twenty feet long, protected by bony plates in the skin, and armed with spines. [ 1913 Webster ]

‖n.; pl. Ichthyosauri [ NL., fr. Gr. 'ichqy`s, -y`os, a fish + say^ros a lizard. ] (Paleon.) An extinct genus of marine reptiles; -- so named from their short, biconcave vertebræ, resembling those of fishes. Several species, varying in length from ten to thirty feet, are known from the Liassic, Oölitic, and Cretaceous formations. [ 1913 Webster ]

‖n. [ L., laurel. ] (Bot.) A genus of trees including, according to modern authors, only the true laurel (Laurus nobilis), and the larger Laurus Canariensis of Madeira and the Canary Islands. Formerly the sassafras, the camphor tree, the cinnamon tree, and several other aromatic trees and shrubs, were also referred to the genus Laurus. [ 1913 Webster ]

n. A genus of stout Old World herbs having cut-lobed leaves and flowers in whorls.
Syn. -- genus Leonurus. [ WordNet 1.5 ]

‖prop. n. [ NL., from Gr. malako`s soft + ptero`n wing + o'yra` tail. ] (Zool.) A genus of African siluroid fishes, including the electric catfishes. See Electric cat, under Electric. [ Sometimes spelled Malopterurus. ] [ 1913 Webster ]

prop. n. (Zool.) The species name of the electric catfish, a freshwater catfish of the Nile and tropical central Africa having an electric organ. [ WordNet 1.5 ]

prop. n. [ NL., from Gr. malako`s soft + ptero`n wing + o'yra` tail. ] (Zool.) A variant spelling of Malapterurus. [ PJC ]

prop. n. (Zool.) See Malopterurus electricus. [ WordNet 1.5 ]

‖n. [ NL., fr. E. Mastodon + Gr. say^ros a lizard. ] (Paleon.) A large extinct genus of labyrinthodonts, found in the European Triassic rocks. [ 1913 Webster ]

{ ‖ } n. [ NL. megalosaurus, fr. Gr. me`gas, mega`lh, great + say^ros lizard: cf. F. mégalosaure. ] (Paleon.) A gigantic carnivorous dinosaur, whose fossil remains have been found in England and elsewhere. [ 1913 Webster ]

prop. n. A genus of snakes including certain of the coral snakes, such as the eastern coral snake (Micrurus fulvius).
Syn. -- genus Micrurus. [ WordNet 1.5 ]

‖n. [ NL., from Gr. mw^ros stupid + sau^ros lizard. ] (Paleon.) An extinct genus of large herbivorous dinosaurs, found in Jurassic strata in America. [ 1913 Webster ]

‖n. [ NL., fr. L. Mosa the River Meuse (on which Meastricht is situated) + Gr. &unr_; a lizard. ] (Paleon.) A genus of extinct marine reptiles allied to the lizards, but having the body much elongated, and the limbs in the form of paddles. The first known species, nearly fifty feet in length, was discovered in Cretaceous beds near Maestricht, in the Netherlands. [ Written also Mososaurus. ] [ 1913 Webster ]

‖n. [ NL. ] (Paleon.) Same as Mosasaurus. [ 1913 Webster ]

prop. n. [ Gr. pa`goyros, crab. ] The type genus of the crustacean family Paguridae.
Syn. -- genus Pagurus. [ WordNet 1.5 ]

n. [ NL., fr. Gr. palaio`s ancient + say^ros a lizard. ] (Paleon.) A genus of fossil saurians found in the Permian formation. [ 1913 Webster ]

n. [ So called from L. Palinurus, the pilot of Aeneas. ] (Naut.) An instrument for obtaining directly, without calculation, the true bearing of the sun, and thence the variation of the compass. [ 1913 Webster ]

prop. n. A genus of Old World thrushes.
Syn. -- genus Phoenicurus. [ WordNet 1.5 ]

‖n. [ NL. ] (Paleon.) Same as Pliosaurus. [ 1913 Webster ]

‖n.; pl. Plesiosauri [ NL., fr. Gr &unr_; near + &unr_; a lizard. ] (Paleon.) A genus of large extinct marine reptiles, having a very long neck, a small head, and paddles for swimming. It lived in the Mesozoic age. [ 1913 Webster ]

‖n. [ NL., from Gr. &unr_; greater + &unr_; lizard. ] (Paleon.) An extinct genus of marine reptiles allied to Plesiosaurus, but having a much shorter neck. [ 1913 Webster ]

‖n. [ NL., from Gr. &unr_; earlier (fr. &unr_; before) + &unr_; a lizard. ] (Paleon.) An extinct genus of reptiles of the Permian period. Called also Protosaurus. [ 1913 Webster ]

‖n. [ L., a squirrel, Gr. &unr_;. See Squirrel. ] (Zool.) A genus of rodents comprising the common squirrels. [ 1913 Webster ]

‖n. [ L. See Silure. ] (Zool.) A genus of large malacopterygious fishes of the order Siluroidei. They inhabit the inland waters of Europe and Asia. [ 1913 Webster ]

‖n. [ NL., fr. Gr. ste`gh roof + say^ros a lizard. ] (Paleon.) A genus of large Jurassic dinosaurs remarkable for a powerful dermal armature of plates and spines. [ 1913 Webster ]

‖n. [ L., akin to Gr. tay^ros, and E. steer. See Steer a young ox. ] 1. (Astron.) (a) The Bull; the second in order of the twelve signs of the zodiac, which the sun enters about the 20th of April; -- marked thus [ &taurus_; ] in almanacs. (b) A zodiacal constellation, containing the well-known clusters called the Pleiades and the Hyades, in the latter of which is situated the remarkably bright Aldebaran. [ 1913 Webster ]

2. (Zool.) A genus of ruminants comprising the common domestic cattle. [ 1913 Webster ]

‖n. [ NL., fr. Gr. &unr_; complete, perfect + &unr_; a lizard. ] (Paleon.) A genus of extinct crocodilian reptiles of the Jurassic period, having a long and slender snout. [ 1913 Webster ]

‖n.; pl. Thesauri [ L. See Treasure. ] A treasury or storehouse; hence, a repository, especially of knowledge; -- often applied to a comprehensive work, like a dictionary or cyclopedia. [ 1913 Webster ]

‖n. [ NL., fr. Gr. tri`x, tricho`s, a hair + o'yra` tail. ] (Zool.) A genus of fishes comprising the hairtails. See Hairtail. [ 1913 Webster ]

‖n. [ L.; of Teutonic origin. See Aurochs. ] (Zool.) A very large, powerful, and savage extinct bovine animal (Bos urus or Bos primigenius) anciently abundant in Europe. It appears to have still existed in the time of Julius Caesar. It had very large horns, and was hardly capable of domestication. Called also, ur, ure, and tur. [ 1913 Webster ]