from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A round to ovoid, gram-positive, often pathogenic bacterium of the genus Streptococcus that occurs in pairs or chains, many species of which destroy red blood cells and cause various diseases in humans, including erysipelas, scarlet fever, and strep throat.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A spherical, gram-positive bacterium of the genus Streptococcus. Although commonly found benignly in the human mouth and gut, and though many species are non-pathogenic, other species can cause diseases including strep throat and more serious conditions.
from the GNU version of the Collaborative International Dictionary of English
- n. A long or short chain of micrococci, more or less curved.
from The Century Dictionary and Cyclopedia
- n. A genus of bacteria belonging to the family Coccaceæ. The cells are spherical, frequently forming chains; flagella are wanting. Division is in but one direction. The species are mostly associated with pathogenic conditions of animal tissues. S. pyogenes is a common pus-forming species.
- n. A bacterium of the genus Streptococcus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. spherical Gram-positive bacteria occurring in pairs or chains; cause e.g. scarlet fever and tonsillitis
Morphologically a compound of strepto- + -coccus. They grow in chains or pairs, thus the name — from Ancient Greek στρεπτός (streptos, "twisted, pliant"), like a chain. (Wiktionary)