(of bacteria) being or relating to a bacterium that retains the violet stain used in Gram's method
例句
用作形容词 (adj.)
Spectinomycin is a broad spectrum antibiotic, which has an effect of being against gram negative and gram positive bacterium. 大观霉素是一种广谱抗生素，对革兰氏阴性和革兰氏阳性菌均有抗菌作用。
美
[ɡræm 'pɑːzətɪv]
