1. (biology) an effect where a toxic substance acts like a stimulant in small doses, but it is an inhibitor in large doses.

Encyclopedia: Hormesis

• Ku Klux Klan
• Ku Kluxer
• ku-chiku
• Kuala Lumpur
• Kuan Yin
• Kuangchou
• Kubla Khan
• Kublai Kaan
• Kublai Khan
• Kubrick
• Kuchean
• Kuchean dialect
• kudos
• kudu
• kudu lily
• kudzu
• kudzu vine
• Kuenlun
• Kuenlun Mountains
• Kuhn
• Kui
• Kuiper
• Kuiper belt
• Kuiper belt object
• Kukenaam