1. A hydrogen atom in an acid that forms a positive ion when the acid dissociates
   - acid hydrogen

Type of: hydrogen atom

• Emberiza
• Emberiza aureola
• pocket veto
• pocket watch
• pocket-handkerchief
• pocket-size
• pocket-sized
• pocketable
• pocketbook
• pocketbook issue
• pocketcomb
• pocketed bat
• pocketed freetail bat
• pocketful
• pocketknife
• pockmark
• pockmarked
• poco
• pococurante
• pod
• podagra
• podalgia
• Podalyria
• Podargidae
• Podargus