from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Any of various rod-shaped, spore-forming, chiefly anaerobic bacteria of the genus Clostridium, such as certain nitrogen-fixing species found in soil and those causing botulism and tetanus.

from The Century Dictionary.

  • noun A supposed genus of bacteria now usually classed under other genera by different authors.
  • noun [lowercase; pl. clostridia (-ä).] A term applied to certain bacteria to describe their spindle-like shape.

from the GNU version of the Collaborative International Dictionary of English.

  • noun spindle-shaped bacterial cell esp. one swollen at the center by an endospore.
  • noun a genus of anaerobic, spore-forming motile bacteria of the family Bacillaceae, including several pathogenic species, such as the causative agents of gas gangrene (Clostridium perfringens), botulism (Clostridium botulinum), and tetanus (Clostridium tetani).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Any of several mostly anaerobic gram-positive bacteria, of the genus Clostridium, that are present in the soil and in the intestines of humans and animals

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

  • noun spindle-shaped bacterial cell especially one swollen at the center by an endospore


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

[New Latin Clōstridium, genus name, from Greek klōstēr, klōstr-, spindle, from klōthein, to spin.]



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