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

• cystoparalysis
• Cystophora
• Cystophora cristata
• cystoplegia
• Cystopteris
• Cystopteris bulbifera
• Cystopteris fragilis
• Cystopteris montana
• cystoscope
• cystoscopy
• Cytesis proliferus
• Cytherea
• cytidine
• Cytisus
• Cytisus albus
• Cytisus multiflorus
• Cytisus ramentaceus
• Cytisus scoparius
• cyto-
• cytoarchitectonic
• cytoarchitectonics
• cytoarchitectural
• cytoarchitecture
• cytochrome
• cytochrome c