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

• murderous
• murderously
• murderousness
• Murdoch
• mure
• murex
• muriate
• muriatic
• muriatic acid
• Muridae
• Muriel Sarah Spark
• Muriel Spark
• Murillo
• murine
• murine typhus
• Muritaniya
• murk
• murkily
• murkiness
• murky
• Murmansk
• murmur
• murmur vowel
• murmuration
• murmurer