Between adjoining surfaces.
* * *
in·ter·prox·i·mal .int-ər-'präk-sə-məl adj situated, occurring, or used in the areas between adjoining teeth <\interproximal space>
in·ter·prox·i·mal·ly -ē adv
* * *
in·ter·prox·i·mal (in″tər-prokґsĭ-məl) between adjoining surfaces, as the space between adjacent teeth. See also interdental and interocclusal.Medical dictionary. 2011.