Of or pertaining to a son or daughter; becoming to a child in relation to his parents; as, filial obedience.

Bearing the relation of a child.

A term used to designate the generation or the sequence of generations following the parental generation. F0 = parental generation. See also F0, F1, & F2 above.

An offspring generation, for example, F1, the first filial generation.

having or assuming the relation of a child or offspring.

relating to or characteristic of or befitting an offspring; "filial respect"

a genetics term pertaining to a generation following the parental (basically the first generation following the first crossing of the ALC to domestic.)

refers to the generation or the sequence of generations following the parental generation. For example an F-1 is a domestic Bengal cat having a leopard cat parent; an F-2 is a domestic Bengal cat having a leopard cat grandparent and so forth.