noun
diplococcus
A spherical bacterium that typically occurs in pairs. Technical term used in microbiology and medicine.
双球菌は、肺炎や髄膜炎の原因となることがある。
Diplococci can cause pneumonia and meningitis.
From 双 (sō, 'pair') + 球菌 (kyūkin, 'coccus'), a straightforward compound describing the paired arrangement of the bacteria.