(history) Forming the names of dynasts, being suffixed to the name of their progenitors and meaning “descendant of”. · (taxonomy) Forming the common names of members of a taxon which has a name ending in -idae.
Circa 19th century; from New Latin Acaridae (“biological family”), from Acarus (“genus”), from acarus (“mite”), from Ancient Greek ἄκαρι (ákari, “mite”). By surface analysis, acar- + -id