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Meaning of ampicillin

am•pi•cil•lin

Pronunciation: (am"pu-sil'in), [key]
— n. Pharm.
  1. a broad-spectrum semisynthetic penicillin, CHNOS, effective against certain susceptible Gram-positive and Gram-negative bacteria.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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