c.1225, from O.Fr.
descepline, from L.
disciplina "instruction given to a disciple," from
discipulus (see
disciple). Sense of "treatment that corrects or punishes" is from notion of "order necessary for instruction." The L. word is glossed in O.E. by
þeodscipe.Meaning "branch of instruction or education" is first recorded c.1386. Meaning "military training" is from 1489; that of "orderly conduct as a result of training" is from 1509. The verb is attested from c.1300.
Disciplinarian "one who enforces order" is first attested 1639; earlier used of Puritans who wanted to establish the Presbyterian "discipline" in England (c.1585).