from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A bacillus that is short and oval in shape.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. any bacillus that has a short oval shape

from The Century Dictionary and Cyclopedia

  • n. A very short bacillus resembling a coccus, as the coccobacillus of swine-plague.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a bacterial cell intermediate in morphology between a coccus and a bacillus; a very short bacillus


cocc(us) + bacillus.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • Rhococcus equi, a gram-positive bacterium, is a facultative intracellular coccobacillus that causes bronchopneumonia in foals aged 1 to 6 months.

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