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

• dilatory plea
• Dilaudid
• dildo
• dilemma
• dilettante
• dilettanteish
• dilettantish
• dilettantism
• diligence
• diligent
• diligently
• dill
• dill pickle
• dill seed
• dill weed
• dillenia
• Dilleniaceae
• dilleniid dicot family
• dilleniid dicot genus
• Dilleniidae
• dilly
• dilly bag
• dillydallier
• dillydally
• diltiazem