Hydrachnid definitions

Hydrachnid

• (n.) An aquatic mite of the genus Hydrachna. The hydrachnids, while young, are parasitic on fresh-water mussels.
Found on http://thinkexist.com/dictionary/meaning/hydrachnid/

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Hydrachnid

Hy·drach'nid noun [ Hydr- + ar achnid .] (Zoology) An aquatic mite of the genus Hydrachna . The hydrachnids, while young, are parasitic on fresh-water mussels.
Found on http://www.encyclo.co.uk/webster/H/74

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