Microfauna Definition

mīkrō-fônə
microfaunae, microfaunas
noun
Microscopic or very small organisms, such as protozoans, that live in soil or benthic sediments.
American Heritage Medicine
Minute, esp. microscopic, fauna.
Webster's New World
The animals of a given microhabitat.
Webster's New World

The smallest of the faunal size divisions, including mainly microorganisms but also sometimes applied to the tiniest species of animal groups such as ticks, insects, etc.

Wiktionary

Other Word Forms of Microfauna

Noun

Singular:
microfauna
Plural:
microfaunae, microfaunas

Origin of Microfauna

  • From micro- (“small, tiny") +"Ž fauna (“animals").

    From Wiktionary

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microfauna