pneumococcus Meaning, Definition & Usage

  1. noun bacterium causing pneumonia in mice and humans
    Diplococcus pneumoniae.

WordNet

Pneu`mo*coc"cus noun
Etymology
See Pneumo-, and Coccus.
Definitions
  1. (Biol.) A form of micrococcus found in the sputum (and elsewhere) of persons suffering with pneumonia, and thought to be the cause of this disease.

Webster 1913