domain

noun

A field or sphere of activity, influence or expertise.

A geographic area owned or controlled by a single person or organization.

A group of related items, topics, or subjects.

(computing, Internet) Any DNS domain name, particularly one which has been delegated and has become representative of the delegated domain name and its subdomains.

(computing, Internet) A collection of DNS or DNS-like domain names consisting of a delegated domain name and all its subdomains.

(computing) A collection of information having to do with a domain, the computers named in the domain, and the network on which the computers named in the domain reside.

(computing) The collection of computers identified by a domain's domain names.

(taxonomy) The highest rank in the classification of organisms, above kingdom; in the three-domain system, one of the taxa Bacteria, Archaea, or Eukaryota.

(biochemistry) A folded section of a protein molecule that has a discrete function; the equivalent section of a chromosome.

(mathematics, set theory) The set of input (argument) values for which a function is defined.

(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.

(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.

(physics) A small region of a magnetic material with a consistent magnetization direction.

(computing) Such a region used as a data storage element in a bubble memory.

(data processing) A form of technical metadata that represent the type of a data item, its characteristics, name, and usage.

(mathematics) A ring with no zero divisors; that is, in which no product of nonzero elements is zero.

(geology) An area of more or less uniform mineralization.

Roots

dominusdom- · Latin · lord, master

Synonyms for domain

demesnen landn spheren arean fieldn realmn archduchyn territoryn propertyn arenan

Words related to domain

subdomain fiefdomn viscountyn signoryn domaine siten feoffn estaten seigneuryn fiefn whitelisted seignioryn websitesn

Synonyms & related words for domain

Find synonyms, related words, and the definition of domain — including demesne, land, sphere, area, field, realm. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to domain

Explore words related to domain — words associated with it, words that go with it, and its nearest matches in meaning. Related words include subdomain, fiefdom, viscounty, signory, domaine, site, feoff, estate. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for domain

Common synonyms for domain include demesne, land, sphere, area, field, realm, archduchy, territory — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does domain come from?

The word domain breaks down into one root of Latin origin: the root dom-, from Latin dominus (“lord, master”). Explore each root to see other English words built from the same source.