(physics) A device in which the detection of radiation takes place at the depletion junction of a reverse-biased semiconductor junction.

A device that sounds an alarm when it detects smoke or other evidence of fire.

(grammar) A determiner used to demonstrate the possession of the thing referenced by the following noun; in English, they include my, his, her, our, your, its and their.

(grammar) a determiner used to demonstrate the identity of the thing referenced by the following noun; in English, they include this, these, that and those

(electronics) A special type of comparator which provides an indication of whether the input voltage is within a specified range.

(physics, astronomy) a radiation detector used in astrophysics, nuclear physics, imaging and X-ray spectroscopy

The arsenal of nuclear weapons of a nation viewed as a deterrent to an enemy from attacking.

Serving to deter, preventing something from happening.

Something that deters.

plural of detective