an acarine, especially a mite of the family Acaridae.


of or relating to an acarid.

Origin of acarid

First recorded in 1875–80; acar(us) + -id2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for acarid

speck, insect, bug, particle, parasite, mote, minim, molecule, atom, bit, tick, smidgen, iota, minute, nit

Examples from the Web for acarid

Historical Examples of acarid

  • Many insects are always covered with certain species of acarid.

  • As regards the scab, itch, and mange insects or mites (Acarid), three perfectly distinct forms are known.


    T. Spencer Cobbold

  • They have always perplexed entomologists, who seem to consider them as parasites allied to acarid and lice.

  • Leroy de Mricourt found in pus, which was running from the ear of a sailor, acarid which Mons.

British Dictionary definitions for acarid


acaridan (əˈkærɪdən)


any of the small arachnids of the order Acarina (or Acari), which includes the ticks and mites


of or relating to the order Acarina

Word Origin for acarid

C19: from acarus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

acarid in Medicine




An arachnid of the order Acarina, which includes the mites and ticks.
Related formsaca•rid adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

acarid in Science



An arachnid of the order Acarina, which includes the mites and ticks. Acarids are small to minute, have no division between the cephalothorax and abdomen, and are often parasitic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.