adj. (also mediaeval) 1 of, or in the style of, the Middle Ages. 2 colloq. old-fashioned, archaic. medieval history the history of the 5th-15th c. medieval Latin Latin of about AD 600-1500. medievalism n. medievalist n. medievalize v.tr. & intr. (also -ise). medievally adv.
[ mod.L medium aevum f. L medius middle + aevum age ]