Definition of bio- in English:

bio-

combining form

  • 1Relating to life:

    ‘biosynthesis’
    1. 1.1 Biological; relating to biology:
      ‘biohazard’
    2. 1.2 Of living beings:
      ‘biogenesis’
    3. 1.3 Relating 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’.

Pronunciation

bio-

/ˈbʌɪəʊ/