Source : Webster's Revised Unabridged Dictionary (1913)

Filiation \Fil`i*a"tion\, n.
   1. Descent from, or as if from, a parent; relationship like
      that of a son; as, to determine the filiation of a
      language.

   2. One that is derived from a parent or source; an offshoot;
      as, the filiations are from a common stock.

Filiation \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.

Source : WordNet®

filiation
     n 1: the kinship relation between an individual and the
          individual's progenitors [syn: {descent}, {line of
          descent}, {lineage}]
     2: inherited properties shared with others of your bloodline
        [syn: {ancestry}, {lineage}, {derivation}]