1. With reference to the origin or beginning
   - primitively, originally 
2. Before now
   - in the first place, earlier, to begin with, originally

Encyclopedia: In the beginning

• biochemistry
• biochip
• bioclimatic
• bioclimatology
• biodata
• biodefence
• biodefense
• biodegradable
• biodegradable pollution
• biodegradation
• biodegrade
• biodiesel
• biodiversity
• biodynamics
• bioelectric
• bioelectricity
• bioengineer
• bioengineering
• bioethics
• biofeedback
• bioflavinoid
• bioflavonoid
• biofuel
• biogas
• biogenesis