The Collaborative International Dictionary of English v.0.48:
xvii \xvii\, adj. The Roman number symbolizing the value seventeen. Syn: seventeen, 17. [WordNet 1.5]WordNet (r) 3.0 (2006):
xvii adj 1: being one more than sixteen [syn: seventeen, 17, xvii] n 1: the cardinal number that is the sum of sixteen and one [syn: seventeen, 17, XVII]