·noun The relationship of a son or child to a parent, ·esp. to a father.
II. Filiation ·noun The assignment of a bastard child to some one as its father; affiliation.
III. Filiation ·add. ·noun One that is derived from a parent or source; an offshoot; as, the filiations are from a common stock.
IV. 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.