From mesio (derivation from μεσος (mesos, “half, middle, between”)) + proximus, superlative form of prope (“near, nigh”).
mesioproximal (comparative more mesioproximal, superlative most mesioproximal)
- (linguistics) In the description of languages with a four-way distinction for demonstratives, refers to a demonstrative which indicates something near the addressee.
- proximal (near the speaker)
- distal (far off or out of sight)
- mesiodistal (near neither the speaker nor the addressee but not far off)