mac·​ro·​organism | \ ¦makrō+ \

Definition of macroorganism

: an organism large enough to be seen by the normal unaided human eye — compare microorganism

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First Known Use of macroorganism

1900, in the meaning defined above

History and Etymology for macroorganism

macr- + organism

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The first known use of macroorganism was in 1900

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Cite this Entry

“Macroorganism.” Dictionary, Merriam-Webster, Accessed 16 Feb. 2020.

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