on-course

The compound adjective 'on-course' is a relatively modern formation, combining the fundamental spatial and participative sense of the preposition 'on' with the directional and procedural sense of 'course'. The word 'course' itself has a rich history of meaning development, originating from the Latin 'currere' (to run), which evolved from the Proto-Indo-European root kers- (to run). This root gave 'course' its core meanings of a path taken, a forward movement, and later, a prescribed series of studies. When combined with 'on', the literal sense of being physically situated upon a path or route seamlessly extended to the figurative sense of being engaged in and progressing correctly through a planned sequence of actions or learning, capturing the state of being aligned with an intended trajectory.

Structure: on + course - on: Old English origin. A preposition/adverb/adjective-forming particle meaning 'in a position above and supported by', 'in contact with the surface of', or 'engaged in an activity or state'. - course: Old French/Latin origin. From Old French 'cours', from Latin 'cursus' (a running, race, journey), from the verb 'currere' (to run). Functions as a noun meaning a route, direction, or series of educational lessons.