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单词 rhamphoid
释义

rhamphoid

/ˈramfɔɪd/
(also ramphoid) Mathematics
adjective
Designating a cusp at which the two branches of the curve lie on the same side of the common tangent, i.e. they have their concavity in the same direction. Contrasted with keratoid.

Origin

Early 19th century (in an earlier sense). From ancient Greek ῥάμϕος beak, of uncertain origin + -oid, after French ramphoïde, noun.

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更新时间:2024/11/10 11:24:09