- 1an area of knowledge or activity; especially one that someone is responsible for The care of older people is being placed firmly within the domain of the family. Physics used to be very much a male domain. see public domain
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- 2lands owned or ruled by a particular person, government, etc., especially in the past The Spice Islands were within the Spanish domains.
- 3(computing) a set of Web sites on the Internet which end with the same group of letters, for example‘.com’or‘.org’
- 4(mathematics) the range of possible values of a particular variable
Check pronunciation: domain