domain
UK /ˌdəʊˈmeɪ̯n/ · US /ˌdoʊ̯ˈmeɪ̯n/ noun
Forms domains
- noun A geographic area owned or controlled by a single person or organization. “The king ruled his domain harshly.”
- noun A field or sphere of activity, influence or expertise. “Dealing with complaints isn't really my domain: get in touch with customer services.”
- noun A group of related items, topics, or subjects.
- noun (mathematics, set theory) The set of input (argument) values for which a function is defined.
- noun (more generally, of a binary relation R between A and B) The set A; The subset of A consisting of elements a of A such that there exists an element b in B with (a,b) in R.
- noun (mathematics) A ring with no zero divisors; that is, in which no product of nonzero elements is zero.
- noun (mathematics, topology, mathematical analysis) An open and connected set in some topology. For example, the interval (0,1) as a subset of the real numbers.
- noun (computing, Internet) Any DNS domain name, particularly one which has been delegated and has become representative of the delegated domain name and its subdomains.
Synonyms
demesne domain name hostname dominium domain of definition sphere area orbit field arena land domain of a function world knowledge domain knowledge base
Antonyms
Etymology
From Middle English demayne, demain (“rule”), from Old French demeine, demaine, demeigne, domaine (“power”), (French domaine), from Latin dominium (“property, right of ownership”), from dominus (“master, proprietor, owner”). Doublet of demesne and dominium, and closely related to dominion and domino. See also dame, and compare demain, danger, dungeon.
Webster’s 1913
- noun Dominion; empire; authority.
- noun The territory over which dominion or authority is exerted; the possessions of a sovereign or commonwealth, or the like. Also used figuratively.
Etymology [F. domaine, OF. demaine, L. dominium, property, right of ownership, fr. dominus master, owner. See Dame, and cf Demesne, Dungeon.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “domain”, CC BY-SA 4.0. Details