| quadrisection | A subdivision into four parts. Origin: Quadri- + section. Source: Websters Dictionary (01 Mar 1998) |
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| quadrisulcate | <zoology> Having four hoofs; as, a quadrisulcate foot; a quadrisulcate animal. Origin: Quadri + sulcate. Source: Websters Dictionary (01 Mar 1998) |
| quadritubercular | Having four tubercles or cusps, as a molar tooth. Origin: quadri-+ L. Tuberculum, tubercle (05 Mar 2000) |
| quadrivalence | <chemistry> The quality or state of being quadrivalent; tetravalence. Source: Websters Dictionary (01 Mar 1998) |
| quadrivalent | Describes an association of four homologous chromosomes at meiosis. (09 Oct 1997) |
| quadrivalve | <botany> Dehiscent into four similar parts; four-valved; as, a quadrivalve pericarp. Origin: Quadri- + valve: cf. F. Quadrivalve. Source: Websters Dictionary (01 Mar 1998) |
| quadrivium | The four "liberal arts," arithmetic, music, geometry, and astronomy; so called by the schoolmen. See Trivium. Origin: L. Source: Websters Dictionary (01 Mar 1998) |
| quadroon | The offspring of a mulatto and a white person; a person quarter-blooded. Alternative forms: quarteron, quarteroon, and quateron. Origin: F. Quarteron, or Sp. Cuarteron. See Quarter a fourth part, and cf. Quarteron. Source: Websters Dictionary (01 Mar 1998) |
| quadroxide | <chemistry> A tetroxide. Origin: Quadri- + oxide. Source: Websters Dictionary (01 Mar 1998) |
| quadrumana | <zoology> A division of the Primates comprising the apes and monkeys; so called because the hind foot is usually prehensile, and the great toe opposable somewhat like a thumb. Formerly the Quadrumana were considered an order distinct from the Bimana, which last included man alone. Origin: NL. See Quadrumane. Source: Websters Dictionary (01 Mar 1998) |
| quadrumane | <zoology> One of the Quadrumana. Origin: L. Quattuor four + manus a hand: cf. F. Quadrumane. Source: Websters Dictionary (01 Mar 1998) |
| quadrumanous | <zoology> Having four hands; of or pertaining to the Quadrumana. Source: Websters Dictionary (01 Mar 1998) |
| quadruped | <zoology> An animal having four feet, as most mammals and reptiles; often restricted to the mammals. Source: Websters Dictionary (01 Mar 1998) |
| quadrupedal | <zoology> Having four feet; of or pertaining to a quadruped. Source: Websters Dictionary (01 Mar 1998) |
| quadruple amputation | Amputation of both arms and both legs. (05 Mar 2000) |