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单词 obconical
释义

obconicaladj.

Brit. /ɒbˈkɒnᵻkl/, U.S. /ɑbˈkɑnək(ə)l/
Origin: Formed within English, by derivation. Etymons: ob- prefix, conical adj.
Etymology: < ob- prefix + conical adj.
Chiefly Botany and Zoology.
Inversely conical; having the form of a cone with the base upward or outward.
ΘΚΠ
the world > space > shape > curvature > curved three-dimensional shape or body > [adjective] > conical > obconic or pear-shaped
turbinated1615
turbinate1661
pyriform1717
pear-shaped1731
top-shaped1776
obconical1799
obconic1819
pear drop1865
pyriformed1874
1799 J. Hull Brit. Flora ii. 246 Apophysis obconical, caps. avato-cylindrical.
1806 J. Galpine Synoptical Compend Brit. Bot. 1 Salicornia... Joints compressed, emarginate; internodes obconical.
1828 J. Stark Elements Nat. Hist. II. 298 Antennæ with obconical joints.
1864 D. Oliver Lessons Elem. Bot. ii. 131 Carpels..immersed in a large, obconical receptacle.
1901 Amer. Naturalist 35 382 Gonangia axillary, slender and smooth, somewhat obconical... Medusæ with sixteen tentacles.
1952 P. W. Richards Trop. Rain Forest (1966) iv. 76 They [sc. shrubs] branch at or not far above the ground-level, and the plant is rounded or obconical in profile.
2010 C. B. Beck Introd. Plant Struct. & Devel. (ed. 2) v. 97 This meristem is a broadly obconical region in the shoulders of the shoot apex.
This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).
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adj.1799
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