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penetrometer
penghulu
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-penia
penicillamine
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penicillinase
pen·i·cil·lin·ase [ pènni sílli nàyss, pènni sílli nàyz ]


noun 
Definition:
 
penicillin-deactivating enzyme: an enzyme produced by some bacteria that inactivates penicillin. Use: treatment of adverse penicillin reactions.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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