Zygantrum, zī-gan′trum, n. a fossa on the posterior face of the arches of each of the vertebræ of the Lacertilia, into which the zygosphene of the succeeding vertebra fits. [Gr. zygon, a yoke, antron, a cave.]
Zygapophysis, zī-ga-pof′i-sis, n. one of the yoke-pieces or articulations of the vertebræ: pl. Zygapoph′ysēs. [Gr. zygon, a yoke, apophysis, process.]
Zygite, zī′gīt, n. a rower in the second tier of a Greek trireme. [Gr. zygitēs—zygon, yoke.]
Zygobranchiate, zī-gō-brang′ki-āt, adj. having paired gills or ctenidia, as certain molluscs: belonging to the Zygobranchiā′ta, an order or suborder of Gastropoda.—Also Zy′gobranch. [Gr. zygon, yoke, brangchia, gills.]
Zygocardiac, zī-gō-kär′di-ak, adj. yoke-like and cardiac, as an ossicle of the stomach of some Crustacea. [Gr. zygon, a yoke, kardia, the heart.]
Zygodactyl, zī-gō-dak′til, adj. having the toes arranged in pairs, two before and two behind, as certain birds—also Zygodactyl′ic, Zygodac′tylous.—n. Zygodac′tylism. [Gr. zygon, a yoke, daktylos, a finger.]
Zygodont, zī′gō-dont, adj. pertaining to molar teeth whose cusps are paired, possessing such molars. [Gr. zygon, yoke, odous, odontos, a tooth.]
Zygoma, zī-gō′ma, n. the arch formed by the malar bone and the zygomatic process of the temporal bone of the skull.—adj. Zygomat′ic.—Zygomatic fossa, the lower part of the fossa bridged over by the zygomatic arch; Zygomatic muscles, two muscles (major and minor) arising from the zygomatic arch. [Gr. zygōma—zygon, a yoke.]
Zygomorphous, zī-gō-mor′fus, adj. yoke-shaped—of flowers divisible into similar halves in one plane only—also Zygomor′phic.—ns. Zygomor′phism, Zygomor′phy. [Gr. zygon, a yoke, morphē, form.]
Zygomycetes, zī-gō-mī-sē′tēz, n.pl. a group of fungi marked by the production of zygospores—the commonest type Mucor mucedo, the common white mould of dead organic matter, as horse-dung.—adj. Zygomycē′tous. [Gr. zygon, a yoke, mykēs, mykētos, a mushroom.]