1) Close together 2) Near or adjacent 
[dentistry] In dentistry, the approximal surfaces are those surfaces which form points of contact between adjacent teeth. However, in diastemic individuals these surfaces may not make contact but are still considered approximal. Due to the topography of approximal sites the removal of plaque by brushing may be difficult and hence a signific...
(ә-prok´sĭ-mәl) close together.
near or adjacent.