偏へん性せい嫌けん気き性せい菌きん

• 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'.