1. (biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms
   - life force, vital force, vitality

Type of: force

• from nowhere
• from pillar to post
• from scratch
• from start to finish
• from the heart
• from time to time
• from way back
• fromage frais
• Fromental Halevy
• frond
• Fronde
• fronded
• front
• front bench
• front burner
• front crawl
• front door
• front end
• front entrance
• front line
• front man
• front matter
• front porch
• front projector
• front room