simple past tense and past participle of twilight zone

(geography) The oceanic realm consisting of the deep ocean, typified by a dearth of plant life, and plentiful carnivorous animals that are able to withstand extreme pressure.

Alternative form of time zone

A variety of groups and individuals practicing Scientology independently of the Church of Scientology.

(oceanography) The part of a shore between high water and low water, especially the beach exposed at maximum ebb spring tides.

The photic zone

(climbing) Land at sufficiently high altitudes that there is not enough oxygen to sustain human life.

The range of temperature, humidity, and other environmental factors that people or other organisms require in order to be physiologically unstressed.

(computing) A hole punched (normally in the top two or three positions) of a punched card in addition to another in order to designate a different (sometimes related) character or to add a plus or minus sign

(military) An area, often on a border between military factions, in which military forces and operations are prohibited.