ZONE, noun [Latin , Gr.] 1. A girdle. An embroiderd zone surrounds her waist. 2. In geography, a division of the earth, with respect to the temperature of different latitudes. The zones are five; the torrid zone extending from tropic to tropic 46 degrees, 56 degrees, or 23 degrees 28' on each side of the equator; two temperate or variable zones, situated between the tropics and polar circles; and two frigid zones, situated between the polar circles and the poles. 3. Circuit; circumference. Ciliary zone in anatomy, the black impression of the ciliary processes on the vitreous humor of the eye.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI