Definitions for acaridˈæk ə rɪd
Random House Webster's College Dictionary
ac•a•ridˈæk ə rɪd(n.)
any arachnid of the order Acarina, comprising the mites and ticks.
Origin of acarid:
1875–80; acar (us ) + -id2
very small free-living arachnid that is parasitic on animals or plants; related to ticks
Any parasitic arachnid, such as mites and ticks, of the order Acarina
Of or pertaining to acarids.
Origin: * Circa 19th Century.