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

Type of: penicillin

• packing needle
• packing nut
• packing plant
• packinghouse
• packman
• packrat
• packsack
• packsaddle
• packthread
• pact
• pad
• pad of paper
• padauk
• Padda
• Padda oryzivora
• padded
• padder
• padding
• paddle
• paddle steamer
• paddle-box
• paddle-shaped
• paddle-wheeler
• paddlefish
• paddler