Definitions

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

  • n. An organism, often a bacterium or fungus, that feeds on and breaks down dead plant or animal matter, thus making organic nutrients available to the ecosystem.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any organism that feeds off decomposing organic material, especially bacterium or fungi.

from The Century Dictionary and Cyclopedia

  • n. That which decomposes.

Etymologies

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