1. A penicillinase-resistant form of penicillin (trade name Nafcil) used (usually in the form of its sodium salt) to treat infections caused by penicillin-resistant strains of staphylococci
   - nafcillin

Type of: penicillinase-resistant antibiotic

• unitive
• unitization
• unitize
• unity
• univalent
• univalve
• univariate
• universal
• universal agent
• universal donor
• universal gas constant
• universal gravitational constant
• universal joint
• Universal Product Code
• universal proposition
• universal quantifier
• universal resource locator
• universal set
• universal solvent
• universal suffrage
• universal time
• universal veil
• universalise
• universalism
• universalist