(also medi·aeval ) / ˌmediˈiːvl; NAmE ; NAmE also ˌmiːd-/ adjective
[ usually before noun ] connected with the Middle Ages (about AD 1000 to AD 1450) :
medieval architecture / castles / manuscripts
the literature of the late medieval period
For more information see the Cultural Guide
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WORD ORIGIN
early 19th cent.: from modern Latin medium aevum middle age + -al .