- Nearest the trunk or the point of origin, said of part of a limb, of an artery or a nerve, so situated. Toward the median plane following the curvature of the dental arch, in contrast to distal2.
- dental anatomy denoting the surface of a tooth in relation with its neighbor, whether mesial or distal, nearer to or farther from the anteroposterior median plane.
[Mod. L. proximalis, fr. L. proximus, nearest, next]