Category:Zone

Zone, n. Etym: [f. zone, l. zona, gr. j to gird, zend yah.]

1. A girdle; a cincture. [poetic] An embroidered zone surrounds her waist. Dryden. Loose were her tresses seen, her zone unbound. Collins.

2. (geog.)

Defn: one of the five great divisions of the earth, with respect to Latitude and temperature.

Note: the zones are five: the torrid zone, extending from tropic to Tropic 46º 56min, or 23º 28min on each side of the equator; two Temperate or variable zones, situated between the tropics and the Polar circles; and two frigid zones, situated between the polar Circles and the poles. Commerce. . . defies every wind, outrides every tempest, and Invades. Bancroft.

3. (math.)

Defn: 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. Davies & peck (math. Dict.)

4. (nat. Hist.) (a) a band or stripe extending around a body. (b) a band or area of growth encircling anything; as, a zone of Evergreens on a mountain; the zone of animal or vegetable life in the Ocean around an island or a continent; the alpine zone, that part of Mountains which is above the limit of tree growth.

5. (crystallog.)

Defn: a series of planes having mutually parallel intersections.

6. Circuit; circumference. [r.] Milton. Abyssal zone. (phys. Geog.) See under abyssal. -- zone axis (crystallog.), a straight line passing through the Center of a crystal, to which all the planes of a given zone are Parallel.

Zone Zone, v. t.

Defn: to girdle; to encircle. [r.] Keats.