A domain is a particular field of thought, activity, or interest, especially one over which someone has control, influence, or rights.
[formal]
...the great experimenters in the domain of art. [+ of]
This information should be in the public domain.
Synonyms: area, world, field, department [informal] More Synonyms of domain
2. countable noun [usually with poss]
Someone's domain is the area they own or have control over.
[literary]
...the mighty king's domain.
Synonyms: kingdom, lands, region, territory More Synonyms of domain
3. countable noun
On the internet, a domain is a set of addresses that shows, for example, the category or geographical area that an internet address belongs to.
[computing]
More Synonyms of domain
domain in British English
(dəˈmeɪn)
noun
1.
land governed by a ruler or government
2.
land owned by one person or family
3.
a field or scope of knowledge or activity
4.
a region having specific characteristics or containing certain types of plants or animals
5. Australian and New Zealand
a park or recreation reserve maintained by a public authority, often the government
6. law
the absolute ownership and right to dispose of land
See also demesne, eminent domain
7. mathematics
a.
the set of values of the independent variable of a function for which the functional value exists
the domain of sin x is all real numbers
Compare range (sense 8a)
b.
any open set containing at least one point
8. logic another term for universe of discourse
domain of quantification
9. philosophy
range of significance (esp in the phrase domain of definition)
10. Also called: magnetic domain physics
one of the regions in a ferromagnetic solid in which all the atoms have their magnetic moments aligned in the same direction
11. computing
a group of computers, functioning and administered as a unit, that are identified by sharing the same domain name on the internet
12. Also called: superkingdom biology
the highest level of classification of living organisms. Three domains are recognized: Archaea (see archaean), Bacteria (see bacteria), and Eukarya (see eukaryote)
13. biochemistry
a structurally compact portion of a protein molecule
Word origin
C17: from French domaine, from Latin dominium property, from dominus lord
domain in American English
(doʊˈmeɪn; dəˈmeɪn)
noun
1.
territory under one government or ruler; dominion
2.
land belonging to one person; estate
3.
supreme ownership
see also eminent domain, public domain
4.
field or sphere of activity or influence
the domain of science
5. Computing
domain name
6. Ancient Mathematics
a.
the set of those values of an independent variable which exist for a given function
b.
the set of all integers, or a set of elements which can be combined in the same way as the integers
7. Physics
a region in a ferromagnetic material within which the atoms are magnetically aligned:alignment of these regions results in the material being magnetized
Word origin
ME domein < MFr domaine < L dominium, right of ownership, dominion < dominus, a lord: see dominate
Examples of 'domain' in a sentence
domain
One of my core beliefs about business success is that domain knowledge really matters.
Times, Sunday Times (2017)
The media organisations applied to have the entire judgment put into the public domain.
Times, Sunday Times (2016)
Should the athlete be expected to put that into the public domain?
The Sun (2016)
But questions were being asked last night how they were allowed into the public domain.
The Sun (2016)
She's been in the public domain for three decades.
The Sun (2016)
And once this information is in the public domain, we have no control over what happens to it.
Computing (2010)
Each test launch costs 17 million of taxpayers' money yet information about this unsuccessful venture was deemed to be outside the public domain.
Times, Sunday Times (2017)
Students lacking prior knowledge in either of the domains fared poorly in both domains.
Pressley, Michael & McCormick, Christine Advanced Educational Psychology For Educators, Researchers and Policymakers, (1995)
It is the domain of family building and family contentment.
Forrest, Ray & Murie, Alan & Williams, Peter Home-ownership - differentiation and fragmentation (1990)
The front page of that section became his personal domain and one he closely guarded.
Times, Sunday Times (2013)
They have embraced the technology firms now entering their domain.
Times, Sunday Times (2014)
We soon learnt the perils of having our notebooks in the public domain.
Times, Sunday Times (2010)
But domain knowledge and relevant experience also matter.
Times, Sunday Times (2016)
Nowadays the very concept of personal ethics has become problematic in one domain after another.
Times, Sunday Times (2010)
Now once you enter this theological domain there is really no turning back.
Kovel, Joel Red Hunting in the Promised Land: Anticommunism and the Making of America (1994)
It also reflects the fact that people can differ radically from one domain to the next.
Evans, Peter & Deehan, Geoff The Descent of Mind - the how and why of intelligence (1990)
At least two more such cases are likely to enter the public domain in the coming months.
Times, Sunday Times (2006)
The judge blurted out things he was not supposed to have put in the public domain.
Times, Sunday Times (2015)
The acclaimed results were removed from the public domain.
Times, Sunday Times (2007)
Some of the intelligence has found its way quickly into the public domain.
Times, Sunday Times (2011)
Knowing the information came from the public domain my research group gaily put it on the internet.
Michael Boulter EXTINCTION: Evolution and the End of Man (2002)
Outside working hours, the hut becomes a family domain.
Times, Sunday Times (2010)
When you enter the public domain, you cede control to the horse.
Times, Sunday Times (2010)
Politics doesn't really enter their domain.
Times, Sunday Times (2010)
Better still, those with deep experience of one domain have a great deal to offer to the other.
Times, Sunday Times (2010)
The first involves a transformation of how one writes philosophy, and the second involves a change in the domain of one 's attentive exploration.
Wood, David Philosophy at the Limit (1990)
In other languages
domain
British English: domain NOUN
A domain is a particular field of thought, activity, or interest, especially one over which someone has control, influence, or rights.
...the great experimenters in the domain of art.
American English: domain
Brazilian Portuguese: domínio
Chinese: 领域
European Spanish: campo
French: domaine
German: Domäne
Italian: settore
Japanese: 分野
Korean: 영역
European Portuguese: domínio
Latin American Spanish: campo
All related terms of 'domain'
domain name
A domain name is the name of a person's or organization's website on the internet, for example ' collins .co.uk'.
public domain
If information is in the public domain , it is not secret and can be used or discussed by anyone.
eminent domain
the right of a state to confiscate private property for public use, payment usually being made to the owners in compensation
magnetic domain
land governed by a ruler or government
in the public domain
able to be discussed and examined freely by the general public
1 (noun)
Definition
a particular area of activity or interest
the great experimenters in the domain of art
Synonyms
area
You will notice that your baby has two soft areas on its head.
world
The publishing world had never seen an event quite like this.
field
They are both experts in their field.
department (informal)
Sorry, I don't know – that's not my department.
sector
Officers were going to retake sectors of the city.
discipline
appropriate topics for the new discipline of political science
sphere
the sphere of international politics
realm
the realm of politics
speciality
2 (noun)
Definition
a particular area of activity or interest
This sort of information should be in the public domain.
Synonyms
sphere
area
She was involved in every area of the project.
field
concern
scene (informal)
the local music scene
Sport just isn't my scene.
sector
the nation's manufacturing sector
territory
They deny that any of their territory is under rebel control.
province
Opera remained largely the province of the aristocracy.
arena
He has no intention of withdrawing from the political arena.
realm
3 (noun)
Definition
land under one ruler or government
the mighty king's domain
Synonyms
kingdom
the Kingdom of Denmark
lands
region
territory
estate
a shooting party on his estate in Yorkshire
province
the Algarve, Portugal's southernmost province
empire
the fall of the Roman empire
realm
Defence of the realm is crucial.
dominion
The Republic is a dominion of the Brazilian people.
demesne
policies (Scottish)
4 (noun)
Definition
a public park
(Australian, New Zealand)
The domain includes a Victorian gazebo and riverside grotto.
Synonyms
public park
park
We went for a brisk walk round the park.
recreation ground
garden
the most beautiful garden on earth
pleasure garden
forest park (New Zealand)
Additional synonyms
in the sense of arena
Definition
a sphere of intense activity
He has no intention of withdrawing from the political arena.
Synonyms
scene (informal),
world,
area,
stage,
field,
theatre,
sector,
territory,
province,
forum,
scope,
sphere,
realm,
domain
in the sense of department
Definition
a specialized sphere of activity
Sorry, I don't know – that's not my department.
Synonyms
area,
line,
responsibility,
function,
province,
sphere,
realm,
domain,
speciality
in the sense of discipline
Definition
a particular area of academic study
appropriate topics for the new discipline of political science