1. An organic base C3H4N2; a histamine inhibitor
   - imidazole, glyoxaline

Type of: alkali, base

• externalize
• externally
• exteroception
• exteroceptive
• exteroceptor
• exterritorial
• extinct
• extinction
• extinction angle
• extinguish
• extinguishable
• extinguished
• extinguisher
• extinguishing
• extinguishment
• extirpable
• extirpate
• extirpation
• extol
• extoller
• extolment
• extort
• extortion
• extortionate
• extortionately