| 1. | related by birth; of the same parentage, descent, etc. |
| 2. | Linguistics. descended from the same language or form: such cognate languages as French and Spanish. |
| 3. | allied or similar in nature or quality. |
| 4. | a person or thing cognate with another. |
| 5. | a cognate word: The English word cold is a cognate of German kalt. |