domain

noun
do·​main | \ dō-ˈmān How to pronounce domain (audio) , də- \

Definition of domain

1 law
a : complete and absolute (see absolute sense 3) ownership of land our highways and roads have been in the domain of state and local governments— T. H. White b. 1915 — compare eminent domain
b : land so owned
2 : a territory over which dominion (see dominion sense 2) is exercised The forest is part of the king's domain.
3 : a region distinctively marked by some physical feature a domain of rushing streams, tall trees, and lakes
4 : a sphere (see sphere sense 4b) of knowledge, influence, or activity the domain of biblical scholarship outside the domain of city police
5 mathematics : the set of elements (see element sense 2b(3)) to which a mathematical or logical variable is limited specifically : the set on which a function (see function entry 1 sense 5a) is defined
6 physics : any of the small randomly oriented regions of uniform magnetization in a ferromagnetic substance
7 mathematics : integral domain
8 biology : the highest taxonomic category in biological classification ranking above the kingdom (see kingdom sense 4b)
9 biochemistry : any of the three-dimensional subunits of a protein that are formed by the folding of its linear peptide chain and that together make up its tertiary (see tertiary entry 1 sense 3c) structure
10 computers : a subdivision of the Internet consisting of computers or sites usually with a common purpose (such as providing commercial information) and denoted in Internet addresses by a unique abbreviation (such as com for commercial sites or gov for government sites) The domain ca is used for sites located in Canada. also : domain name Our domain is Merriam-Webster.com.

Examples of domain in a Sentence

The forest is part of the king's domain. My sister is the math expert in the family, but literature is my domain. Childcare is no longer solely a female domain.
Recent Examples on the Web At the time, Schwartz said removing the name that quickly from the building, web domain and branding materials would be impossible. Mary Carole Mccauley, baltimoresun.com, 20 Apr. 2021 Over the past few years, hotel chains have been venturing into the short-term rental market, a domain long dominated by peer-to-peer platforms populated by individuals moonlighting in hospitality. Washington Post, 6 May 2022 Almost universally considered the mother’s domain and God bless east Cleveland for this paradigm shift. Laura Johnston, cleveland, 6 May 2022 Hole pupfish has paddled back from the brink in a hellish desert domain. Los Angeles Times, 5 May 2022 Another threat that is likely to inveigle itself into the Web3 domain is phishing. Andrew Newman, Forbes, 4 May 2022 This is true, not in the colloquial sense but in the literal sense: rocket science is a domain in which Musk has demonstrated some expertise. Andrew Marantz, The New Yorker, 27 Apr. 2022 A year earlier, TikTok’s domain had been the seventh most popular website, while Facebook.com was in second. Chloe Taylor, Fortune, 27 Apr. 2022 Raichik’s identity is in the public interest, given the account’s political goals; it was also easily discovered via a domain-registration website. Kaitlyn Tiffany, The Atlantic, 22 Apr. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'domain.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of domain

15th century, in the meaning defined at sense 1a

History and Etymology for domain

alteration of Middle English demayne, from Anglo-French demeine, from Latin dominium, from dominus — see dominate

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Time Traveler for domain

Time Traveler

The first known use of domain was in the 15th century

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Dictionary Entries Near domain

Domagk

domain

domainal

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Last Updated

23 May 2022

Cite this Entry

“Domain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/domain. Accessed 25 May. 2022.

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More Definitions for domain

domain

noun
do·​main | \ dō-ˈmān How to pronounce domain (audio) \

Kids Definition of domain

1 : land under the control of a ruler or a government
2 : a field of knowledge or activity the domain of science

domain

noun
do·​main | \ dō-ˈmān, də- How to pronounce domain (audio) \

Medical Definition of domain

1 : any of the three-dimensional subunits of a protein that together make up its tertiary structure, that are formed by folding its linear peptide chain, and that are variously considered to be the basic units of protein structure, function, and evolution immunoglobulin light chains have two domains and heavy chains have four or five domains, depending on classJournal of the American Medical Association
2 : the highest taxonomic category in biological classification ranking above the kingdom

More from Merriam-Webster on domain

Nglish: Translation of domain for Spanish Speakers

Britannica English: Translation of domain for Arabic Speakers

Britannica.com: Encyclopedia article about domain

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