English edit

 
Chemical structure of nafcillin
 
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Etymology edit

From naph(thalene) +‎ -cillin (6-aminopenicillanic acid derivative).

Pronunciation edit

Noun edit

nafcillin (uncountable)

  1. (pharmacology) A semisynthetic penicillin that is resistant to beta-lactamase and is used especially in the form of its hydrated sodium salt C21H21N2NaO5S·H2O as an antibiotic.

References edit