n. the class of fishes comprising the cartilaginous fishes, which includes the sharks.
Syn. -- class Chondrichthyes. [ WordNet 1.5 ]

‖n. [ NL., fr. Gr. &unr_; terrible + &unr_; fish. ] (Paleon.) A genus of large extinct Devonian ganoid fishes. In some parts of Ohio remains of the Dinichthys are abundant, indicating animals twenty feet in length. [ 1913 Webster ]

a. [ Gr. 'ichqy`s, -y`os, a fish. ] (Zool.) Like, or pertaining to, fishes. [ 1913 Webster ]

{ } n. [ L. ichthyocolla, Gr. &unr_;; 'ichqy`s, -y`os, a fish + &unr_; glue: cf. F. ichthyocolle. ] Fish glue; isinglass; a glue prepared from the sounds of certain fishes. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + E. coprolite. ] (Geol.) Fossil dung of fishes. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + &unr_; a spear + -lite. ] (Zool.) One of the spiny plates found on the back and tail of certain skates. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os + graphy: cf. F. ichthyographie. ] A treatise on fishes.

{ } a. [ Gr. &unr_;: 'ichqy`s, -y`os, a fish + e'i^dos form. ] (Zool.) Somewhat like a fish; having some of the characteristics of fishes; -- said of some amphibians. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + (prob.) L. oleum oil; but cf. Ichthyolite. ] (Chem.) An oily substance prepared by the dry distillation of a bituminous mineral containing fossil fishes. It is used in medicine as a remedy in some forms of skin diseases. [ Webster 1913 Suppl. ]

n. [ Gr. 'ichqy`s, -y`os, a fish + &unr_; to worship. ] Worship of fishes, or of fish-shaped idols. Layard. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + -lite. ] (Paleon.) A fossil fish, or fragment of a fish.

{ } a. [ Cf. F. ichthyologique. ] Of or pertaining to ichthyology. [ 1913 Webster ]

n. [ Cf. F. ichthyologiste. ] One versed in, or who studies, ichthyology. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + -logy: cf. F. ichthyologie. ] The natural history of fishes; that branch of Zoology which relates to fishes, including their structure, classification, and habits. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + -mancy: cf. F. ichthyomancie. ] Divination by the heads or the entrails of fishes. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. &unr_; fish-shaped; 'ichqy`s, -y`os, a fish + morfh` form. ] (Zool.) The Urodela.

{ } a. [ See Ichthyomorpha. ] Fish-shaped; as, the ichthyomorphic idols of ancient Assyria. [ 1913 Webster ]

n. [ See Ichthyophagous. ] One who eats, or subsists on, fish. [ 1913 Webster ]

a. [ L. ichthyophagus, Gr. &unr_;; 'ichqy`s, -y`os, a fish + fagei^n to eat. ] Eating, or subsisting on, fish. [ 1913 Webster ]

n. [ Gr. 'ichqyofagi`a: cf. F. ichthyophagie. ] The practice of eating, or living upon, fish. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + &unr_; eye. ] See Apophyllite. [ R. ] [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'ichqy`s, -y`os, a fish + &unr_; a louse. ] (Zool.) A division of copepod crustaceans, including numerous species parasitic on fishes. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'ichqy`s, -y`os, a fish + &unr_; appearance. ] (Zool.) A grand division of the Vertebrata, including the Amphibia and Fishes. [ 1913 Webster ]

‖n. pl. [ NL. See Ichthyopterygium. ] (Paleon.) See Ichthyosauria. [ 1913 Webster ]

‖n. [ NL., fr. Gr. 'ichqy`s, -y`os, a fish + &unr_; a fin. ] (Anat.) The typical limb, or lateral fin, of fishes. [ 1913 Webster ]

‖n. [ NL., fr. Gr. 'ichqy`s, -y`os, a fish + &unr_; bird. ] (Paleon.) An extinct genus of toothed birds found in the American Cretaceous formation. It is remarkable for having biconcave vertebræ, and sharp, conical teeth set in sockets. Its wings were well developed. It is the type of the order Odontotormæ. [ 1913 Webster ]

n. [ Cf. F. ichthyosaure. ] (Paleon.) One of the Ichthyosaura. [ 1913 Webster ]

‖n. pl. [ NL. See Ichthyosaurus. ] (Paleon.) An extinct order of marine reptiles, including Ichthyosaurus and allied forms; -- called also Ichthyopterygia. They have not been found later than the Cretaceous period. [ 1913 Webster ]

a. (Paleon.) Of or pertaining to the Ichthyosauria. -- n. One of the Ichthyosauria. [ 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. [ NL., fr. Gr. 'ichqy`s fish. ] (Med.) A disease in which the skin is thick, rough, and scaly; -- called also fishskin. -- Ich`thy*ot"ic a. [1913 Webster]

n. One skilled in ichthyotomy. [ 1913 Webster ]

n. [ Gr. 'ichqy`s, -y`os, a fish + &unr_; to cut. ] The anatomy or dissection of fishes. [ R. ] [ 1913 Webster ]

‖n. [ NL., fr. Gr. 'ichqy`s a fish. ] Same as Ichthus. [ 1913 Webster ]

‖n. pl. [ NL. See Paleo-, and Ichthyology. ] (Zool.) A comprehensive division of fishes which includes the elasmobranchs and ganoids. [ Written also Palæichthyes. ] [ 1913 Webster ]

‖n. [ NL., fr. Gr. &unr_; wing + &unr_; fish. ] (Paleon.) A genus of Devonian fossil fishes with winglike appendages. The head and most of the body were covered with large bony plates. See Placodermi. [ 1913 Webster ]