paraconidn.
/ˌparəˈkəʊnɪd/, U.S. /ˌpɛrəˈkoʊnɪd/ Zoology.
A cusp on a mammalian lower molar tooth corresponding to the paracone on an upper molar.
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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 Amer. Naturalist 22 927 (table) Terms proposed... Paraconid.
1922 W. K. Gregory Origin & Evol. Human Dentition i. 84 It seems probable that the paraconid, metaconid, and entoconid, arose in situ on the slopes of the protoconid.
1970 Nature 25 July 356/1 The presence of a paraconid in such a position is more characteristic of fossil lemuroids and omomyoids.
1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) xi. 342 The primitive lower molar..has a pattern similar to that of the upper molar, but reversed; there is an external apex, the protoconid, and an internal base, where paraconid and metaconid are present.
This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).
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n.1888