entelechy (n.)

word-forming element meaning "near, at, in, on, within," from Greek en "in," cognate with Latin in (from PIE root *en "in"), and thus with en- (1). Typically assimilated to em- before -p-, -b-, -m-, -l-, and -r-.

"ultimate object or aim," 1904, from Greek telos "the end, limit, goal, fulfillment, completion," from PIE *kwel-es-, suffixed form of root *kwel- (1) "revolve, move round; sojourn, dwell," perhaps via the notion of "turning point (of a race-course, a field)."