| a. | 1. | One more than twelve; ten and three; |
| 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. |
| Noun | 1. | thirteen - the cardinal number that is the sum of twelve and one |
| Adj. | 1. | thirteen - being one more than twelve |
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