tithis

Updated: January 15, 2026

The father's brother is called 'patruus, in Greek 'patros', the mother's brother avunculus, in Greek specifically 'matros, though the term theios is used indifferently to indicate either. The father's sister is called 'amita, the mother's 'matertera'; both go in Greek by the name 'theia, or, with some, 'tithis.

- The Institutes of Justinian