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conoid a. 圓錐形的,尖圓的
n. 圓錐體 圓錐形的,尖圓的圓錐體 conoid n 1: a shape whose base is a circle and whose sides taper up to a point [synonym: {cone}, {conoid}, {cone shape}] Conoid \Co"noid\ a.
Resembling a cone; conoidal. [1913 Webster] Conoid \Co"noid\ (k[=o]"noid), n. [Gr. kwnoeidh`s conical; kw^nos cone e'i^dos form: cf. F. cono["i]de.] 1. Anything that has a form resembling that of a cone. [1913 Webster] 2. (Geom.) (a) A solid formed by the revolution of a conic section about its axis; as, a parabolic conoid, elliptic conoid, etc.; -- more commonly called {paraboloid}, {ellipsoid}, etc. (b) A surface which may be generated by a straight line moving in such a manner as always to meet a given straight line and a given curve, and continue parallel to a given plane. --Math. Dict. [1913 Webster]
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