domain

[ doh-meyn ]

/ doʊˈmeɪn /

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See synonyms for: domain / domains on Thesaurus.com

noun

a field of action, thought, influence, etc.: the domain of science.

the territory governed by a single ruler or government; realm.

a realm or range of personal knowledge, responsibility, etc.

a region characterized by a specific feature, type of growth or wildlife, etc.: We entered the domain of the pine trees.

Law. land to which there is superior title and absolute ownership.

Biology. a taxonomic category of the highest rank, just above kingdom, grouping together all forms of life having certain fundamental characteristics in common: in the three-domain system of classification adopted by many biologists, separate domains are assigned to the archaea (Archaea), bacteria (Bacteria), and eukaryotes (Eukaryota).

Mathematics.

the set of values assigned to the independent variables of a function.
region (def. 11a).

Computers.

a group of computers and devices on a network that are administered under the same protocol.
(on the internet) one or more computers or computer networks under the same administrative control, identified by a domain name or any of its discrete parts.
top-level domain.

Physics. one of many regions of magnetic polarity within a ferromagnetic body, each consisting of a number of atoms having a common polarity, and collectively determining the magnetic properties of the body by their arrangement.

Crystallography. a connected region with uniform polarization in a twinned ferroelectric crystal.

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Origin of domain

First recorded in 1595–1605; from French domaine, alteration (by association with Latin dominium “right of ownership, property”) of Old French demeine, from Late Latin dominicum, noun use of neuter of Latin dominicus “of a master,” equivalent to domin(us) “lord, master” + -icus; see origin at dominium, -ic

OTHER WORDS FROM domain

do·ma·ni·al, adjective

Words nearby domain

doltish, Dolton, dolus, dom, Domagk, domain, domain name, domal, domatium, dome, dome car

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use domain in a sentence

But, he said, the company was looking to apply that expertise to a new domain.
Facebook and NYU researchers discover a way to speed up MRI scans|Jeremy Kahn|August 18, 2020|Fortune
Selectively reach out to domains with effective, modern content that audiences will find useful.
Modern SEO strategy: Three tactics to support your efforts|Nick Chasinov|June 23, 2020|Search Engine Watch
As you build this up, your domain authority significantly improves, arming you with the experience and money to go big and eventually share the field with your big competitors.
SEO on a shoestring budget: What small business owners can do to win|Ali Faagba|June 4, 2020|Search Engine Watch
Some tools like Awario even offer a whitelist feature which is used to prioritize certain domains — this could come in handy if you want to make sure you’re getting mentions from specific websites popular in your industry.
Online reputation management: Seven steps to success|Aleh Barysevich|June 3, 2020|Search Engine Watch

Instead, your domain should clearly target your country of choice and show users around the world that your website is catered specifically to them.
Six must-know international SEO tips to expand business|Edward Coram James|June 3, 2020|Search Engine Watch
As it turns out, my cell phone number had been searchable through a GoDaddy domain listing I obtained several years ago.
A Female Writer’s New Milestone: Her First Death Threat|Annie Gaus|December 1, 2014|DAILY BEAST
But for the National Draft Ben Carson for President PAC to get going, they needed a Web domain.
Ben Carson’s Bizarrely Serious, Seriously Bizarre Campaign Crew|Olivia Nuzzi|November 12, 2014|DAILY BEAST
It was there, in small type, hosted on some dot-edu domain, looking the way websites did in the mid-1990s.
War Is Hell and Such Good Fun|Don Gomez|November 11, 2014|DAILY BEAST
The executive suite has been the domain of the talls: Barack Obama is six-one.
For Short Men in 2014, The News Is Surprisingly Good|Kevin Bleyer|September 13, 2014|DAILY BEAST
And in August, the same eBay account put the domain Newsball.com up for auction, for $21,000,000.
He Bullies Kids and Calls It News|Brandy Zadrozny|June 26, 2014|DAILY BEAST
The America that they annexed to Europe was merely a new domain added to a world already old.
The Unsolved Riddle of Social Justice|Stephen Leacock
The Seine and Aulbe rivers render the situation of this domain as beautiful as it is strong and eligible for defense.
The Jesuit Relations and Allied Documents, Vol. II: Acadia, 1612-1614|Various
No ill use has been made of these privileges; but the domain and wealth of Great Britain have received amazing addition.
The Eve of the Revolution|Carl Becker
In the domain of politics I should make use of the indigenous institutions and serve them by curing them of their proved defects.
Third class in Indian railways|Mahatma Gandhi
This outlook into the supreme domain of nature lifts us, for the first time in our work, definitely above the lower world of life.
Man And His Ancestor|Charles Morris

British Dictionary definitions for domain

domain

/ (dəˈmeɪn) /

noun

land governed by a ruler or government

land owned by one person or family

a field or scope of knowledge or activity

a region having specific characteristics or containing certain types of plants or animals

Australian and NZ a park or recreation reserve maintained by a public authority, often the government

law the absolute ownership and right to dispose of landSee also demesne, eminent domain

maths

the set of values of the independent variable of a function for which the functional value existsthe domain of sin x is all real numbers Compare range (def. 8a)
any open set containing at least one point

logic another term for universe of discourse domain of quantification

philosophy range of significance (esp in the phrase domain of definition)

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

computing a group of computers, functioning and administered as a unit, that are identified by sharing the same domain name on the internet

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)

biochem a structurally compact portion of a protein molecule

Word Origin for domain

C17: from French domaine, from Latin dominium property, from dominus lord

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for domain

domain

[ dō-mān′ ]

Mathematics The set of all values that an independent variable of a function can have. In the function y = 2x, the set of values that x (the independent variable) can have is the domain. Compare range.

Computer Science A group of networked computers that share a common communications address.

Biology A division of organisms that ranks above a kingdom in systems of classification that are based on shared similarities in DNA sequences rather than shared structural similarities. In these systems, there are three domains: the archaea, the bacteria, and the eukaryotes.

Physics A region in a ferromagnetic substance in which the substance is magnetized with the same polarization throughout.

domain

Origin of domain

OTHER WORDS FROM domain

Words nearby domain

Words related to domain

How to use domain in a sentence

British Dictionary definitions for domain

Word Origin for domain

Scientific definitions for domain