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

Type of: scientific theory

• spoonbill catfish
• spoondrift
• spoonerism
• spoonfeed
• spoonfeeding
• spoonflower
• spoonful
• spoonleaf yucca
• spoony
• spoor
• sporadic
• sporadically
• sporangiophore
• sporangium
• Sporanox
• spore
• spore case
• spore mother cell
• spore sac
• spore-bearing
• Spork
• Sporobolus
• Sporobolus cryptandrus
• Thomas Gray
• Thomas Hardy