acarid acarid /ˈækərɪd/

noun

1. Very small free-living arachnid that is parasitic on animals or plants; related to ticks  ( acarid )
   very small free-living arachnid that is parasitic on animals or plants; related to ticks
    Under the microscope, I observed the acarid, a tiny arachnid related to ticks.
   Under the microscope, I observed the acarid, a tiny arachnid related to ticks.