penicillin

10 entries found for penicillin.
To select an entry, click on it. (Click 'Go' if nothing happens.)

penicillin benzathine penicillin G penicillin F penicillin G penicillin G benzathine penicillin G procaine penicillin O penicillin V phenoxymethyl penicillin procaine penicillin G

Main Entry: pen·i·cil·lin
Pronunciation: pen--sil-n
Function: noun
1 : a mixture of relatively nontoxic antibiotic acids produced especially by molds of the genus Penicillium (as P. notatum or P. chrysogenum) and having a powerful bacteriostatic effect against various chiefly gram-positive bacteria (as staphylococci, gonococci, pneumococci, hemolytic streptococci, or some meningococci)
2 : any of numerous often hygroscopic and unstable amido acids (as penicillin G, penicillin O, and penicillin V) that have a structure in which a four-membered lactam ring shares a nitrogen and a carbon atom with a thiazolidine ring to which it is fused and that are components of the penicillin mixture or are produced biosynthetically by the use of different strains of molds or different media or are synthesized chemically
3 : a salt or ester of a penicillin acid or a mixture of such salts or esters