Origin: 1375–1425; late Middle English < Latin circumscrīptiōn- (stem of circumscrīptiō), equivalent to circumscrīpt(us) (past participle of circumscrībere to circumscribe; see circum-, script) + -iōn--ion
1530s, from L. circumscriptionem "fact of being held to set limits," noun of action from circumscribere (see circumscribe). Fig, sense of "setting limits of meaning" is earliest in Eng.