“hypocone”的英文意思_释义_用法

单词

hypocone

释义

hypocone Zool.|ˈhaɪpəʊkəʊn|
[f. hypo- + cone n.¹]
An external cusp on the inner back corner of a mammalian upper molar tooth.
1888H. F. Osborn in Amer. Naturalist XXII. 1072 The first ‘secondary’ cusps (hypocone—hypoconid), added to the upper and lower molars of the primitive triangle, modify the crown from a triangular to a quadrangular shape.1891Flower & Lydekker Mammals ii. §2. 33 Finally, in the bunodont series, the addition of a postero-internal cusp, termed the hypocone, forms the sex⁓tubercular molar.1933A. S. Romer Vertebr. Paleontol. xii. 248 In the upper molars the tooth tends to square itself up usually by the additiion of a fourth cusp, the hypocone, at the inner back corner.1968R. Zangerl tr. Peyer's Compar. Odontol. 187 In the upper jaw a talon formed in that a second lingual cusp developed next to the protocone, a so-called hypocone.

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