mesiodistal

mesio- +‎ distal

mesiodistal (not comparable)

1. (dentistry) Of or relating to the mesial and distal surfaces of a tooth
   • 1999 October 15, J.-J. Jaeger et al., “A New Primate from the Middle Eocene of Myanmar and the Asian Early Origin of Anthropoids”, in Science‎, volume 286, number 5439, →DOI, pages 528–530:

     However, Afrotarsius displays lower molars with much more acute cusps, a more protruding shelf-like paraconid, a metaconid opposite to the protoconid, a mesiodistal cristid obliqua, a strong labial cingulum, and a more distal entoconid.

2. (linguistics) In the description of languages with a four-way distinction for demonstratives, refers to a demonstrative which indicates something near neither the speaker nor the addressee, but not too far off from either one.

• mesioproximal

• distomesial