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单词 pentagonous
释义

pentagonousadj.

Brit. /pɛnˈtaɡənəs/, U.S. /pɛnˈtæɡənəs/
Origin: A borrowing from Latin, combined with an English element. Etymons: Latin pentagōnus , -ous suffix.
Etymology: < classical Latin pentagōnus pentagon adj. + -ous suffix. Compare earlier pentagon adj., pentagonal adj., pentagonary adj. at pentagon adj. and n. Derivatives, Pentagonian adj.
Chiefly Botany and Zoology. Now rare.
Pentagonal.
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the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > with particular section or base > pentagonal
pentagonal1570
pentagonary1658
pentagonous1661
1661 R. Lovell Πανζωορυκτολογια, sive Panzoologicomineralogia Isagoge sig. B5 Amongst Fishes, The Cartilagineous, are plaine or long:..The heart is pentagonous.
1674 Philos. Trans. 1673 (Royal Soc.) 8 6187 The first is a Pentagonous Stone, as broad as my thumbnail.
1762 Philos. Trans. 1761 (Royal Soc.) 52 358 It is formed of pentagonous joints, or vertebræ.
1856 T. Ewbank Life in Brazil xxxiv. 378 The leaves are large and pentagonous, which, with young shoots, are the animal's [sc. the sloth's] favourite food.
1965 Ann. Missouri Bot. Garden 52 96 Disc pentagonous, about 0.1–0.3 mm. thick.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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adj.1661
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