‖n.;
Zona pellucida. [ NL. ] (Biol.)
Zona radiata [ NL. ] (Biol.),
a. [ L. zonalis. ] Of or pertaining to a zone; having the form of a zone or zones. [ 1913 Webster ]
Zonal equation (Crystallog.),
Zonal structure (Crystallog.),
Zonal symmetry. (Biol.)
n. [ Mod. Gr. &unr_; a girdle, fr. Gr. &unr_;, dim. of &unr_; a girdle. See Zone. ] A belt or girdle which the Christians and Jews of the Levant were obliged to wear to distinguish them from Mohammedans.
‖n. pl. [ NL. ] (Zool.) A division of Mammalia in which the placenta is zonelike. [ 1913 Webster ]
a. (Bot.) Divided by parallel planes;