'biogenic' definitions:
Definition of 'biogenic'
(from WordNet)
adjective
Produced by living organisms or biological processes; "fermentation is a biogenic process"
adjective
Essential for maintaining the fundamental life processes; "sleep and food and water are among the biogenic needs of the organism"
Definition of 'biogenic'
From: GCIDE
- biogenic \bi`o*gen"ic\, a. [Gr. bi`os life + -gen + -ic.] produced by living organisms; as, biogenic methane. [PJC]