microbenthos
/ˌmʌɪkrə(ʊ)ˈbɛnθɒs/Ecology
noun
The microfauna of the benthos; specifically the organisms at or near the sea floor or a lake bed that pass through a 0.05 mm mesh.
Origin
1940s. From micro- + benthos. Compare macrobenthos, and slightly earlier microbenthic.
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