noun. bacterium causing pneumonia in mice and humans.
- Diplococcus pneumoniae
- -coccus (English)
- coccus (Latin)
- pneumo- (English)
Example sentences of the word pneumococcus
1. Noun, singular or mass
The pneumonia shot is a vaccination given to prevent illness caused by Streptococcus pneumoniae bacteria, also known as pneumococcus**.