ˌakəˈrīnə, -ēnə noun plural
Usage: capitalized
Etymology: New Latin, from Acarus + -ina
: a cosmopolitan and very large order of Arachnida comprising the mites and ticks most of which lack distinct demarcation into cephalothorax and abdomen and have no book lungs, many of which are parasites of plants, animals, or man, and some of which are vectors of important diseases — compare texas fever , typhus