Hydrachnidae
plural noun
Hy·drach·ni·dae
-nəˌdē
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
Word History
Etymology
New Latin, from Hydrachna, type genus (from hydr- + Greek achna, achnē foam, chaff) + -idae
- at stud
- at such short notice
- at swords' points
- at table
- at that
- at that rate
- at the (very) least
- at the age of
- at the back of one's mind
- at the behest of someone
- at the bidding of someone
- at the bottom of one's class
- at the bottom of one's/the class
- at the bottom of the class
- at the bottom of the heap
- at the bottom of the pile
- at the bottom/top of the heap
- at the center of things
- at the coalface
- at the cost of
- at the count of
- at the crack of dawn
- at the discretion of
- at the discretion of someone
- at the door