偏へん性せい嫌けん気き性せい菌きん

Meanings

1

obligate anaerobe; strict anaerobe

Technical term in microbiology for a bacterium that cannot survive in the presence of oxygen.

germ, fungus, bacteria

嫌けん気き性せい菌きん
嫌気性菌 is a broader term for any anaerobic bacterium, while 偏性嫌気性菌 specifically refers to obligate anaerobes that cannot tolerate oxygen at all.
通つう性せい嫌けん気き性せい菌きん
通性嫌気性菌 (facultative anaerobe) can grow with or without oxygen, unlike 偏性嫌気性菌 which strictly requires an oxygen-free environment.

Compound of 偏性 (obligate) + 嫌気性 (anaerobic) + 菌 (bacterium). The term is a direct calque from English 'obligate anaerobe'.