'xiii' definitions:

Definition of 'xiii'

From: WordNet
adjective
Being one more than twelve [syn: thirteen, 13, xiii]
noun
The cardinal number that is the sum of twelve and one [syn: thirteen, 13, XIII, baker's dozen, long dozen]

Definition of 'xiii'

From: GCIDE
  • xiii \xiii\, adj.
  • 1. the Roman number symbolizing the value thirteen. Used after a noun it may symbolize the ordinal number; as, Superbowl XIII.
  • Syn: thirteen, 13. [WordNet 1.5]