metaconid


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met·a·co·nid

(met'ă-kon'id),
The mesolingual cusp of a lower molar tooth.

met·a·co·nid

(met'ă-kon'id)
1. The mesiolingual cusp of human lower molars.
2. A cusp derived from the protoconid in the evolutionary history of the molars.

metaconid

(mĕt-ă-kŏn′ĭd)
The mesiolingual cusp of a lower molar tooth.
References in periodicals archive ?
The protoconid and hypoconid are visible labially while the metaconid is prominent lingually.
The entoconids are contiguous with hypoconids posteriorly and metaconids anteriorly.
NAP XV 162'08, a right m2 is quite worn lingually, missing the apex of the metaconid, but preserving a strong, globose protoconid (Fig.
The anterolabial-anterolingual conulids are symmetrical, equal in size, and are of the same size as the metaconid and protoconid.
The m2 paraconid (MBLUZ-P-3.990; Table I; Figure 2f) is not anteriorly projected and lacks a meta-entoconid fold; metaconid smaller than ml metaconid and is covered by the lingual enamel band, which is going to the anterobuccal hypoconid edge; ento-hypoconid fold reflected 85[degrees] anteromesialy; hypoconid buccolingually broad, looks like a trigonid size; anterior facet of trigonid convex; lingual enamel band extends between metaconid to anterolingual side of hypoconid, without covering it totally; buccal enamel fold deeper; buccal enamel band covering the anteromesial protoconid facet through posteromesial hypoconulid facet; hypoconid lingually projected; buccal enamel broader than lingual enamel.
In Ankylodon progressus and PTRM 1600, the protoconid and metaconid have a direct buccal-lingual alignment as opposed to an oblique orientation in Ankylodon annectens.
The trigonid is formed by subequal protoconid and metaconid with the protoconid slightly mesiad of the metaconid.
The protoconid is slightly lower than the metaconid. The molars are moderately rugose and bear weak stylids and ribs (Fig.
In particular, both have the main cusps arranged in opposite pairs, the tendency to a trilophodont M1 in adults, and an anteriorly-posteriorly compressed procingulum that coupled with its coalescence to the metaconid produce on the m1 a nearly bilophodont pattern.
Symmetrical anteroconid, its labial lobe connects with the metaconid. Welldeveloped labial cingulid, with a big round c1 and two or three accessory cuspids.
George (2012) was able to distinguish three autapomorphic characters for Notiosorex (diagnostic only to genus): (1) lightly pigmented teeth, (2) posterior extent of alveolus of i1 in labial view reaching past paraconid to metaconid of m1, and (3) only one cusp, the hypoconid, present on talonid of m3.