1. (biology) a hypothesis of directed evolution (as opposed to natural selection of random variations)

Encyclopedia: Orthogenesis

• weaving
• web
• web browser
• web desktop
• web log
• Web Map Server
• Web Map Service
• web server
• web shop
• web spinner
• web-footed
• web-spinning mite
• web-toed
• web-toed salamander
• Webb
• webbed
• webbed foot
• webbing
• webbing clothes moth
• webbing moth
• webby
• webcam
• webcast
• weber
• Weber's law