biology: the highest taxonomic category in biological classification ranking above the kingdom (see kingdomsense 4b)
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 tertiaryentry 1 sense 3c) structure
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 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 WebThe human mind has been the most superior form of intelligence on this planet for quite some time; computational Intelligence just exceeded our minds in many domains.—Miles Klee, Rolling Stone, 11 Sep. 2023 In the past year, major tech companies and upstart competitors have been in a race to commercialize new A.I. technologies, which offer transformative possibilities in many domains—including search.—Sheelah Kolhatkar, The New Yorker, 11 Sep. 2023 But the most dramatic result was that processing such a massive amount of data allowed the model to offer up results beyond its training, providing expertise in brand-new domains.—Steven Levy, WIRED, 5 Sep. 2023 That’s especially true early in the morning, before all the tourists arrive, when the island is the sole domain of hundreds of feral cats, who are fed by workers there, in a throwback to the age when Egyptians considered felines to be divine.—Amy Crawford, Smithsonian Magazine, 5 Sep. 2023 Even domain experts who understand how to apply data in the real world (a doctor interpreting health data, for example) will need enough technical knowledge of how these models work to have confidence in relying on them.—Paige McGlauflin, Fortune, 1 Sep. 2023 Students will learn to use psychological learning principles to work effectively with shelter dogs – and this knowledge can later be translated to other domains of their lives.—Shlomit Flaisher-Grinberg, The Conversation, 24 Aug. 2023 The story is set in the seedy domain of Miami’s criminal underbelly, where Spanish actor Jordi Mollà stars as a seasoned hitman in pursuit of his next target.—Patrick Brzeski, The Hollywood Reporter, 2 Sep. 2023 The lineup card has been Francona’s domain during his tenure in Cleveland.—Paul Hoynes, cleveland, 26 Aug. 2023 See More
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'domain.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
alteration of Middle English demayne, from Anglo-French demeine, from Latin dominium, from dominus — see dominate
: 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 class—Journal of the American Medical Association
: the highest taxonomic category in biological classification ranking above the kingdom