Zōne, n.

n. [Fr. zone, Pr., Sp., Pg., It., & Lat. zona, Gr. ζώνη, from ζωννύναι, to gird.]

1Sense 1. A girdle.

An embroidered zone surrounds her waist. Dryden.

Loose were her tresses seen, her zone unbound. Collins.

2Sense 2. (Geog.) One of the five great divisions of the earth, with respect to latitude and temperature.

The zones are five: the torrid zone, extending from tropic to tropic 46° 56', or 23° 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.

Commerce . . . defies every wind, outrides every tempest, and invades every zone. Bancroft.

3Sense 3. (Math.) The portion of the surface of a sphere, included between two parallel planes; the portion of a surface of revolution included between two planes perpendicular to the axis. Math. Dict.

4Sense 4. (Nat. Hist.) (a.) A band or stripe running round any object. (b.) A band or area encircling any thing; as, the zone of evergreens, on a mountain; or, the zone of animal or vegetable life in the ocean around an island or continent.

5Sense 5. (Crystallog.) A series of planes pertaining to a common section of a crystal, whether oblique or not, having their mutual intersections parallel.

6Sense 6. Circuit; circumference. Milton.

Ciliary zone (Anat.), a lamina of a circular form and striated appearance, formed by the radiating folds of the choroid coat of the eye, which lie in depressions of the vitreous humor, behind the iris.