Definition of zone

• n. - A girdle; a cincture.
• n. - One of the five great divisions of the earth, with respect to latitude and temperature.
• n. - 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.
• n. - A band or stripe extending around a body.
• n. - 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.
• n. - A series of planes having mutually parallel intersections.
• n. - Circuit; circumference.
• v. t. - To girdle; to encircle.