The building blocks of English

Affixes

acar(o)-

Also acari‑.

A mite or tick.

Greek akari, mite or tick.

Mites and ticks belong to the order or subclass, Acari (or Acarina); a member of the group is an acarid and the study of them is acarology. A substance that kills mites and ticks is an acaricide (Latin ‑cida, from caedere, kill).