Microorganism

noun

/ˌmaɪ.kɹəʊˈɔː.ɡən.ɪ.zəm̩/

Word Frequency: 0.6

Definitions

1.nounAn organism that is too small to be seen by the unaided eye, especially a single-celled organism, such as a bacterium.

"The cud is then reswallowed and further digested by specialized microorganisms that live in the rumen."

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