Meaning

noun an unvarying or habitual method or procedure

noun a short theatrical performance that is part of a longer program

noun a set sequence of steps, part of larger computer program

originUnadapted borrowing from French routine. By surface analysis, route + -ine. Further from Latin rupta via. Compare typologically travel << Latin tripālium, whence also travail, note the inverse semantic vector from a subjective state (toil) to an objective action (journey). Also compare Czech běžný (< běžet), Russian обихо́д (obixód), обихо́дный (obixódnyj) (akin to ходи́ть (xodítʹ)).

Etymology from Wiktionary, CC BY-SA 3.0