metaconen.
/ˈmɛtəkəʊn/, U.S. /ˈmɛdəˌkoʊn/ Zoology.
A cusp on the posterior buccal corner of a mammalian upper molar tooth.
ΘΚΠ
the world > animals > mammals > [noun] > parts of > (parts of) teeth
heel1833
metacone1888
metaconid1888
metaconule1888
paracone1888
paraconid1888
protocone1888
protoconid1888
protoconule1888
mesostyle1892
talonid1897
1888 H. F. Osborn in Jrnl. Acad. Nat. Sci. Philadelphia 9 242 The primitive cone may be called the protocone; upon the anterior and posterior slopes of which appear, respectively, the paracone and metacone.
1896 Proc. Zool. Soc. 570 The posterior extension representing the metacone.
1933 A. S. Romer Vertebr. Paleontol. xii. 248 Inside the metacone [there is often] a smaller one [sc. a cusp], the metaconule.
1960 Current Anthropol. 1 217/1 The buccal cusps (paracone and metacone) are large, and the protocone is relatively reduced.
1979 Nature 20 Sept. 213/1 The paracone and metacone are V-shaped, well-separated and near the middle of the tooth.
1992 Jrnl. Paleontol. 66 499 The paracone and the metacone of A. inopinata are separated at their bases, a feature absent in the Bemalambdidae and Harpyodus.
Derivatives
metaˈconal adj. of or relating to a metacone.
ΘΚΠ
the world > animals > mammals > [adjective] > of parts of > of teeth
molar1626
molary1835
homoeodont1888
metaconal1896
taurodont1915
1896 Proc. Zool. Soc. 570 The dental germ presenting the appearance of a high cone with a large posterior heel (metaconal region) and a slight internal extension.
1971 P. Hershkovitz in A. A. Dahlberg Dental Morphol. & Evol. viii. 129 In cercopithecoids, crista V is transverse and meets the buccal and metaconal portion of the plagiocrista.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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n.1888