aux.o.troph

n.（名詞）
An organism, such as a strain of bacteria, that has lost the ability to synthesize certain substances required for its growth and metabolism as the result of mutational changes.
營養(yǎng)缺陷型：一種有機(jī)體，如細(xì)菌菌株，因某種突變的結(jié)果而失去合成某種生長及代謝所需物質(zhì)的能力

來源：
Back-formation from auxotrophic
源自 auxotrophic的逆構(gòu)詞