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

Type of: alkali, base

• holophyte
• holophytic
• Holothuria
• Holothuria edulis
• holothurian
• Holothuridae
• Holothuroidea
• holotype
• holozoic
• hols
• Holstein
• Holstein-Friesian
• holster
• holt
• holus-bolus
• holy
• Holy City
• holy clover
• Holy Communion
• holy cow
• holy crap
• holy day
• holy day of obligation
• Holy Eucharist
• Holy Father