FILIATION

noun the relationship of a son or child to a parent, ·esp. to a father.

2. filiation ·noun the assignment of a bastard child to some one as its father; affiliation.

3. filiation ·add. ·noun one that is derived from a parent or source; an offshoot; as, the filiations are from a common stock.

4. filiation ·add. ·noun descent from, or as if from, a parent; relationship like that of a son; as, to determine the filiation of a language.