noun
ZoologyA worm of the family Naididae, which comprises small aquatic (mostly freshwater) oligochaetes.
adjective
ZoologyBelonging to, characteristic of, or designating the family Naididae of worms.
Origin
1930s; earliest use found in Ecological Monographs. From scientific Latin Naididae, family name from Naid-, stem of Nais, genus name + -idae. Compare German Naididen, plural.
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