1. (biology) a scientific theory of the origin of species of plants and animals
   - theory of evolution, evolutionism

Type of: scientific theory

• energise
• energiser
• energising
• energize
• energizer
• energizing
• energy
• Energy Department
• energy level
• energy of activation
• Energy Secretary
• energy state
• energy unit
• energy-absorbing
• energy-releasing
• energy-storing
• enervate
• enervated
• enervating
• enervation
• Enesco
• Enets
• enfant terrible
• enfeeble
• enfeeblement