1. Semisynthetic penicillin (trade names Principen and Polycillin and SK-Ampicillin)
   - ampicillin, Principen, Polycillin

Type of: penicillin

• daybreak
• daycare
• daydream
• daydreamer
• daydreaming
• dayflower
• dayfly
• daygirl
• daylight
• daylight robbery
• daylight saving
• daylight savings
• daylight vision
• daylight-saving time
• daylight-savings time
• daylily
• daylong
• daymare
• Daypro
• dayroom
• days
• dayspring
• daystar
• daytime
• Dayton