| 单词 | quaternary |
| 释义 | Word Frequency quaternary(kwəˈtɜːnərɪ) adjective 1. consisting of fours or by fours 2. fourth in a series 3. chemistry containing or being an atom bound to four other atoms or groups a quaternary ammonium compound 4. mathematics having four variables nounWord forms: plural -naries 5. the number four or a set of four Word origin C15: from Latin quaternārius each containing four, from quaternī by fours, distributive of quattuor fourWord Frequency Quaternary(kwəˈtɜːnərɪ) adjective 1. of, denoting, or formed in the most recent period of geological time, which succeeded the Tertiary period nearly two million years ago noun 2. the Quaternary |
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