Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
penetrative
penetrometer
penghulu
penguin
penholder
-penia
penicillamine
penicillate
penicillin
penicillinase
penicillium
penile
penillion
peninsula
penis
penis envy
penitent
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

penicillin
pen·i·cil·lin [ pènni síllin ]


noun 
Definition:
 
antibiotic derived from mold: an antibiotic belonging to a group originally derived from mold of the genus Penicillium but now produced synthetically. C16H18N2O4S
[Early 20th century. <penicillium]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft