• (geometry, loosely, perhaps by meronymy) A frustum of a sphere.
  • (geography, now rare) Each of the five regions of the earth's surface into which it was divided by climatic differences, namely the torrid zone (between the tropics), two temperate zones (between the tropics and the polar circles), and two frigid zones (within the polar circles).
  • A given area distinguished on the basis of a particular characteristic, use, restriction, etc.

    "The white zone is for loading and unloading only."

  • (crystallography) A series of planes having mutually parallel intersections.
  • (networking) That collection of a domain's DNS resource records, the domain and its subdomains, that are not delegated to another authority.
  • (geometry) The curved surface of a frustum of a sphere, the portion of surface of a sphere delimited by parallel planes.
  • A given area distinguished on the basis of a particular characteristic, use, restriction, etc.

    "There is a no-smoking zone that extends 25 feet outside of each entrance."

  • A band or stripe extending around a body.
  • (chiefly sports) A high-performance phase or period.

    "I just got in the zone late in the game: everything was going in."

  • (now literary) A belt or girdle.
  • A circuit; a circumference.
  • Any given region or area of the world.
  • A band or area of growth encircling anything.

    "a zone of evergreens on a mountain; the zone of animal or vegetable life in the ocean around an island or a continent"

  • (baseball, informal) The strike zone.

    "That pitch was low and away, just outside of the zone."

  • (Apple computing) A logical group of network devices on AppleTalk.


  • To define the property use classification of an area.

    "This area was zoned for industrial use."

  • To girdle or encircle.
  • To divide into or assign sections or areas.

    "Please zone off our staging area, a section for each group."

  • To enter a daydream state temporarily, for instance as a result of boredom, fatigue, or intoxication; to doze off.

    "Everyone just put their goddamn heads together and zoned. (Byron Coley, liner notes for the album "Piece for Jetsun Dolma" by Thurston Moore)"

  • "I must have zoned while he was giving us the directions."

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