Definition of genus
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Genus (n.) An assemblage of species, having so many fundamental points of structure in common, that in the judgment of competent scientists, they may receive a common substantive name. A genus is not necessarily the lowest definable group of species, for it may often be divided into several subgenera. In proportion as its definition is exact, it is natural genus; if its definition can not be made clear, it is more or less an artificial genus..
Lern More About Genus
Acorn-shell ::
Acorn-shell (n.) One of the sessile cirripeds; a barnacle of the genus Balanus. See Barnacle.
Asaphus ::
Asaphus (n.) A genus of trilobites found in the Lower Silurian formation. See Illust. in Append.
Hydrophid ::
Hydrophid (n.) Any sea snake of the genus Hydrophys and allied genera. These snakes are venomous, live upon fishes, and have a flattened tail for swimming..
Leek ::
Leek (n.) A plant of the genus Allium (A. Porrum), having broadly linear succulent leaves rising from a loose oblong cylindrical bulb. The flavor is stronger than that of the common onion..
Whidah Bird ::
Whidah bird () Any one of several species of finchlike birds belonging to the genus Vidua, native of Asia and Africa. In the breeding season the male has very long, drooping tail feathers. Called also vida finch, whidah finch, whydah bird, whydah finch, widow bird, and widow finch..
Lecythis ::
Lecythis (n.) A genus of gigantic trees, chiefly Brazilian, of the order Myrtaceae, having woody capsules opening by an apical lid. Lecythis Zabucajo yields the delicious sapucaia nuts. L. Ollaria produces the monkey-pots, its capsules. Its bark separates into thin sheets, like paper, used by the natives for cigarette wrappers..
Noctiluca ::
Noctiluca (n.) A genus of marine flagellate Infusoria, remarkable for their unusually large size and complex structure, as well as for their phosphorescence. The brilliant diffuse phosphorescence of the sea is often due to myriads of Noctilucae..
Adder's-tongue ::
Adder's-tongue (n.) A genus of ferns (Ophioglossum), whose seeds are produced on a spike resembling a serpent's tongue..
Leadwort ::
Leadwort (n.) A genus of maritime herbs (Plumbago). P. Europaea has lead-colored spots on the leaves, and nearly lead-colored flowers..
Cowhage ::
Cowhage (n.) A leguminous climbing plant of the genus Mucuna, having crooked pods covered with sharp hairs, which stick to the fingers, causing intolerable itching. The spiculae are sometimes used in medicine as a mechanical vermifuge..
Phoca ::
Phoca (n.) A genus of seals. It includes the common harbor seal and allied species. See Seal.
Nebalia ::
Nebalia (n.) A genus of small marine Crustacea, considered the type of a distinct order (Nebaloidea, or Phyllocarida.).
Spined ::
Spinebill (n.) Any species of Australian birds of the genus Acanthorhynchus. They are related to the honey eaters.
Etheostomoid ::
Etheostomoid (n.) Any fish of the genus Etheostoma and related genera, allied to the perches; -- also called darter. The etheostomoids are small and often bright-colored fishes inhabiting the fresh waters of North America. About seventy species are known. See Darter..
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