noun
: a mite of the group Hydrachnellae ; especially : a free-living freshwater mite of the family Hydrachnidae — called also water spider, water tick
noun
: a mite of the group Hydrachnellae ; especially : a free-living freshwater mite of the family Hydrachnidae — called also water spider, water tick
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012