Definify.com
Webster 1913 Edition
Filiation
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.
Webster 1828 Edition
Filiation
FILIA'TION
,Noun.
1.
The relation of a son or child to a father; correlative to paternity.2.
Adoption.