A member of the family Gordiidae; relating to horsehair worms in this family classification.
From Gordiidae (the taxonomic family name) with the suffix '-id' used in zoology to denote organisms belonging to a particular family.
The '-id' suffix is taxonomist shorthand—'gordiid' lets scientists quickly say 'member of family Gordiidae' just like 'hominid' means member of family Hominidae.
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