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WordReference Random House Learner's Dictionary of American English © 2024ter•ti•ar•y /ˈtɜrʃiˌɛri, -ʃəri/USA pronunciation adj. - of the third order, rank, stage, formation, etc.;
third.
WordReference Random House Unabridged Dictionary of American English © 2024ter•ti•ar•y (tûr′shē er′ē, tûr′shə rē),USA pronunciation adj., n., pl. -ar•ies. adj. - of the third order, rank, stage, formation, etc.;
third. - Chemistry
- noting or containing a carbon atom united to three other carbon atoms.
- formed by replacement of three atoms or groups.
- Geology(cap.) noting or pertaining to the period forming the earlier part of the Cenozoic Era, occurring from 65 million to 2 million years ago, characterized by the development and proliferation of mammals. See table under geologic time.
- Birds[Ornith.]tertial.
- Religion[Eccles.]noting or pertaining to a branch, or third order, of certain religious orders that consists of lay members living in community (regular tertiaries) or living in the world (secular tertiaries.)
n. - Geology(cap.) the Tertiary Period or System.
- [Ornith.]a tertial feather.
- Religion(often cap.) [Eccles.]a member of a tertiary branch of a religious order.
- See tertiary color.
- Latin tertiārius of third part or rank, equivalent. to terti(us) third + -ārius -ary
- 1540–50
Collins Concise English Dictionary © HarperCollins Publishers:: tertiary /ˈtɜːʃərɪ/ adj - third in degree, order, etc
- (of an industry) involving services as opposed to extraction or manufacture, such as transport, finance, etc
- of or relating to a Third Order
- (of an organic compound) having a functional group attached to a carbon atom that is attached to three other groups
- (of an amine) having three organic groups attached to a nitrogen atom
- (of a salt) derived from a tribasic acid by replacement of all its acidic hydrogen atoms with metal atoms or electropositive groups
Also called: tertial rare of, relating to, or designating any of the small flight feathers attached to the part of the humerus nearest to the body
n ( pl -tiaries)- Also called: tertial rare any of the tertiary feathers
- a member of a Third Order
Etymology: 16th Century: from Latin tertiārius containing one third, from tertius third Collins Concise English Dictionary © HarperCollins Publishers:: Tertiary /ˈtɜːʃərɪ/ adj - of, denoting, or formed in the first period of the Cenozoic era, which lasted for 63 million years, during which mammals became dominant
n - the Tertiary ⇒ the Tertiary period or rock system, divided into Palaeocene, Eocene, Oligocene, Miocene, and Pliocene epochs or series
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