Thir″teen′, n. 1. The number greater by one than twelve; the sum of ten and three; thirteen units or objects.
2. A symbol representing thirteen units, as 13 or xiii.
Webster's Dictionary 1913
Thir″teen′, n. 1. The number greater by one than twelve; the sum of ten and three; thirteen units or objects.
2. A symbol representing thirteen units, as 13 or xiii.