One of the main cusps, at the posterolabial side
The metacone is a cusp on the molars of the upper dentition in hominids. It is found at the buccal distal area of the tooth. The crests between the cusps are adaptations for slicing food during occlusion or mastication (chewing). Other cusps of the upper dentition of hominids include the paracone, hypocone, and the protocone. ...
The distobuccal cusp of an upper molar tooth. ... Origin: meta-+ G. Konos, cone ... (05 Mar 2000) ... 
Type: Term Pronunciation: met′ă-kōn Definitions: 1. The distobuccal cusp of an upper molar tooth.