meiofauna

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mei·o·fau·na

 (mī′ō-fô′nə)
n. pl. meiofauna or mei·o·fau·nas
Small animals of benthic sediments, such as nematodes and copepods.

[Greek meiōn, less; see mei- in Indo-European roots + fauna.]

mei′o·fau′nal adj.

meiofauna

(ˈmaɪəʊˌfɔːnə)
n
(Zoology) the component of the fauna of a sea or lake bed comprising small (but not microscopic) animals, such as tiny worms and crustaceans
[C20: from Greek meiōn less + fauna]
ˌmeioˈfaunal adj