Definition of "biontic"

The complete and accurate repetition of phyletic by biontic development is obliterated and abbreviated by secondary contraction, as ontogeny strikes out for itself an ever straighter course; accordingly, the repetition is the more complete the longer the series of young stages successively passed through.

1988, Keith Stewart Thomson, Morphogenesis and Evolution, page 20

There is no need to clutter the literature with more long Germanic compounds: suffice it to say that referring to the organism/habitat relationship as biontic, philic or xenic summarises the above arguments succinctly.

2000, R. L. Kitching, Food Webs and Container Habitats, page 44

Soil contains biontic and abiontic lipids.

1993, M. J. Baker, Grasslands for Our World, page 508