Definition of Hydrachnidae
in some classifications
: a large family of water mites (group Hydrachnellae) that includes all the common free-living mites of fresh water and a few parasites of the gills of mollusks and that is now usually broken up into numerous separate families
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of hydrachnidae
New Latin, from Hydrachna, type genus (from hydr- + Greek achna, achnē foam, chaff) + -idae — more at ear
Seen and Heard
What made you want to look up Hydrachnidae? Please tell us where you read or heard it (including the quote, if possible).