'xii' definitions:

Definition of 'xii'

From: WordNet
adjective
Denoting a quantity consisting of 12 items or units [syn: twelve, 12, xii, dozen]
noun
The cardinal number that is the sum of eleven and one [syn: twelve, 12, XII, dozen]

Definition of 'xii'

From: GCIDE
  • xii \xii\, adj. The Roman number symbolizing the value twelve; denoting a quantity consisting of 12 items or units. Used after a noun it may symbolize the ordinal number; as, Superbowl XII.
  • Syn: twelve, 12, dozen. [WordNet 1.5]