ˌnō(ˌ)vōˈbīəsə̇n noun
( -s )
Etymology: probably from nov- + anti bio tic + streptomy cin
: an acid antibiotic C 31 H 36 N 2 O 11 that is produced by actinomycetes of the genus Streptomyces (as S. niveus or S. spheroides ) and is active especially against gram-positive bacteria (as staphylococci)