名詞 antibiotic:

1. a chemical substance derivable from a mold or bacterium that kills microorganisms and cures infections
   同義詞：antibiotic drug

形容詞 antibiotic:

1. of or relating to antibiotic drugs

1. Antibiotic can be used against infection.
   抗菌素可以用來防止感染。

an.ti.bi.ot.ic

n.（名詞）
A substance, such as penicillin or streptomycin, produced by or derived from certain fungi, bacteria, and other organisms, that can destroy or inhibit the growth of other microorganisms. Antibiotics are widely used in the prevention and treatment of infectious diseases.
抗菌素，抗生素：由真菌，細(xì)菌和其它微生物產(chǎn)生或從中得到的一種物質(zhì)，如青霉素或鏈霉素，可以破壞或抑制其它微生物的生長?？咕貜V泛用于傳染病的預(yù)防和治療
adj.（形容詞）
Of or relating to antibiotics.
抗菌素的：抗菌素的，關(guān)于抗菌素的
Of or relating to antibiosis.
抗菌作用的：抗菌作用的，關(guān)于抗菌作用的
Destroying life or preventing the inception or continuance of life.
抗生的：破壞或防止生命開始或延續(xù)的

【引伸】
an.tibiot.ically
adv.（副詞）