ac·​a·​ri·​nar·​i·​um | \ -rəˈna(a)rēəm \
plural acarinaria\ -​ēə \ or acarinariums\ -​ēəmz \

Definition of acarinarium

: a chamber of the body wall of insects (such as wasps) frequently infested by tiny nonparasitic mites

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of acarinarium

1925, in the meaning defined above

History and Etymology for acarinarium

New Latin, from Acarina + -arium

Keep scrolling for more

Learn More about acarinarium

Time Traveler for acarinarium

Time Traveler

The first known use of acarinarium was in 1925

See more words from the same year

Statistics for acarinarium

Cite this Entry

“Acarinarium.” Dictionary, Merriam-Webster, Accessed 2 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on acarinarium

What made you want to look up acarinarium? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!