D defs.my
Entry 1 sense Webster, 1913

xiii

· IPA
01 adj. the Roman number symbolizing the value thirteen. Used after a noun it may symbolize the ordinal number; as, Superbowl XIII.
  1. 1.
    the Roman number symbolizing the value thirteen. Used after a noun it may symbolize the ordinal number; as, Superbowl XIII.
Syn. thirteen, 13.