An Etymological Dictionary of Astronomy and Astrophysics

The internal or inner part. → differentiated interior.

Etymology (EN): From L. interior “inner,” comparative adj. of inter “within.”

Etymology (PE): Daruné, from darun “in, into; within” (Mid.Pers. andarôn
“inside,” from andar, → inter-, + rôn “side, direction;” Av. ravan- “(course of a) river”) + -é nuance suffix.