from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A nonmotile, gram-positive bacterium (Streptococcus pneumoniae) that is the most common cause of bacterial pneumonia, associated with meningitis and other infectious diseases.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A gram-positive bacterium, Streptococcus pneumoniae, that causes pneumonia and other infectious diseases
from the GNU version of the Collaborative International Dictionary of English
- n. A form of micrococcus found in the sputum (and elsewhere) of persons suffering with pneumonia, and thought to be the cause of this disease.
from The Century Dictionary and Cyclopedia
- n. A diplococcus which is regarded as the causative factor of acute croupous pneumonia. Also termed diplococcus pneumoniæ or Fraenkel's pneumococcus. See diplococcus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. bacterium causing pneumonia in mice and humans
pneumo- + -coccus (Wiktionary)