2 Zoology , historical Relating to or denoting a former system of classification in which the animal kingdom is divided into five subkingdoms, and each subkingdom into five classes.
- When Darwin read that an opponent of the ‘quinary’ system was proposing a modification to sets of four, he expostulated in his notebooks, ‘Anyone may believe anything in such rigmarole about analogies and numbers’.
Early 17th century: from Latin quinarius, from quini 'five at once, a set of five', from quinque 'five'.
Words that rhyme with quinarybinary, finery, pinery, vinery, winery
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