bi·ot·ic 
(bī-ŏtĭk)
(bī-ŏtĭk)adj.
1. Of or having to do with life or living organisms.
2. Produced or caused by living organisms.
[Probably Greek biōtikos, from biōtos, life, from bioun, to live, from bios, life; see gwei- in the Appendix of Indo-European roots.]