| 单词 | tertiary |
| 释义 | Word Frequency tertiary(ˈtɜːʃərɪ) adjective 1. third in degree, order, etc 2. (of education) taking place after secondary school, such as at university, college, etc 3. (of an industry) involving services as opposed to extraction or manufacture, such as transport, finance, etc Compare primary (sense 8b), secondary (sense 7)4. Roman Catholic Church of or relating to a Third Order 5. chemistry a. (of an organic compound) having a functional group attached to a carbon atom that is attached to three other groups b. (of an amine) having three organic groups attached to a nitrogen atom c. (of a salt) derived from a tribasic acid by replacement of all its acidic hydrogen atoms with metal atoms or electropositive groups 6. Also called: tertial ornithology rare of, relating to, or designating any of the small flight feathers attached to the part of the humerus nearest to the body nounWord forms: plural -tiaries 7. Also called: tertial ornithology rare any of the tertiary feathers 8. Roman Catholic Church a member of a Third Order Word origin C16: from Latin tertiārius containing one third, from tertius thirdWord Frequency Tertiary(ˈtɜːʃərɪ) adjective 1. of, denoting, or formed in the first period of the Cenozoic era, which lasted for 63 million years, during which mammals became dominant noun 2. the Tertiary |
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