%trema%

‖n. [ NL., fr. Gr. "e`lix, "e`likos, a helix + &unr_; a hole. ] (Anat.) The opening by which the two scalae communicate at the top of the cochlea of the ear. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. mo`nos single + &unr_; hole. ] (Zool.) A subclass of Mammalia, having a cloaca in which the ducts of the urinary, genital, and alimentary systems terminate, as in birds. The female lays eggs like a bird. See Duck mole, under Duck, and Echidna. [ 1913 Webster ]

a. (Zool.) Of or pertaining to the Monotremata. [ 1913 Webster ]

‖n. [ NL., fr. Gr. nw^ton back + &unr_; a hole. ] (Zool.) The pouched, or marsupial, frog of South America. [ 1913 Webster ]

‖n. pl.; [ NL., fr. Gr. pla`gios slanting + &unr_;, &unr_;, a hole. ] (Zool.) Same as Lepidosauria. [ 1913 Webster ]

‖a. [ It. ] (Mus.) Trembling; -- used as a direction to perform a passage with a general shaking of the whole chord. [ 1913 Webster ]

n. (Zool.) One of the Trematodea. Also used adjectively. [ 1913 Webster ]

‖n. pl. [ NL., from Gr. &unr_; having holes, from &unr_;, &unr_;, a hole. ] (Zool.) An extensive order of parasitic worms. They are found in the internal cavities of animals belonging to all classes. Many species are found, also, on the gills and skin of fishes. A few species are parasitic on man, and some, of which the fluke is the most important, are injurious parasites of domestic animals. The trematodes usually have a flattened body covered with a chitinous skin, and are furnished with two or more suckers for adhesion. Most of the species are hermaphrodite. Called also Trematoda, and Trematoidea. See Fluke, Tristoma, and Cercaria. [ 1913 Webster ]