Fil′i‐a″tion (?), n. [LL. filiatio, fr. L. filius son: cf. F. filiation. See Filial.] 1. The relationship of a son or child to a parent, esp. to a father.
The relation of paternity and filiation. Sir M. Hale.
2. (Law) The assignment of a bastard child to some one as its father; affiliation. Smart.