bio-
/ˈbʌɪəʊ/combiningForm
1Relating to life: biosynthesis
1.1Biological; relating to biology: biohazard
1.2Of living beings: biogenesis
1.3Relating to or involving the use of toxic biological or biochemical substances as weapons of war: bioterrorism
Origin
From Greek bios '(course of) human life'. The sense is extended in modern scientific usage to mean 'organic life'.