An Etymological Dictionary of Astronomy and Astrophysics

A way or passage out.

Etymology (EN): From L. exit “he or she goes out,” from exire “to go out,” from → ex- “out” + ire “to go;” cf.
Gk ion " going," neut. pr.p. of ienai “to go;” Pers. ây-, â- present stem of âmadan “to come;” O.Pers. aitiy “goes;” Av. ay- “to go, to come,” aēiti “goes;” Skt. e- “to come near,” eti “arrival;” Goth. iddja “went,” Lith. eiti “to go;” Russ. idti “to go.”

Etymology (PE): Osraft, from os-, → ex- “out,” + raft, raftan “to go, walk,” → entrance.