Source : Webster's Revised Unabridged Dictionary (1913)

Filial \Fil"ial\, a. [L. filialis, fr. filius son, filia
   daughter; akin to e. female, feminine. Cf. {Fitz}.]
   1. Of or pertaining to a son or daughter; becoming to a child
      in relation to his parents; as, filial obedience.

   2. Bearing the relation of a child.

            And thus the filial Godhead answering spoke.
                                                  --Milton.

Source : WordNet®

filial
     adj 1: designating the generation or the sequence of generations
            following the parental generation [ant: {parental}]
     2: relating to or characteristic of or befitting an offspring;
        "filial respect" [ant: {parental}]