細さい菌きん類るい

noun

bacteria (as a taxonomic group)

Refers to bacteria as a broad biological category, often in scientific or educational contexts. Not typically used for a single bacterium; compare 細菌 (さいきん) for individual bacteria or the general concept.

• 細さい菌きん類るいは原げん核かく生せい物ぶつに分ぶん類るいされる。

  Bacteria are classified as prokaryotes.

• この抗こう生せい物ぶっ質しつは多おおくの細さい菌きん類るいに効こう果かがある。

  This antibiotic is effective against many types of bacteria.