Word Study
acarid
CIDE DICTIONARY
acarid, n.
very small free-living arachnid that is parasitic on animals or plants; related to ticks. [WordNet 1.5]
OXFORD DICTIONARY
acarid, n. any small arachnid of the order Acarina, including mites and ticks.
Etymology
mod.L acarida f. acarus f. Gk akari mite
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