Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

acari

Medical Definition of acari

    plural of acarus




Acari

play
noun plural Ac·a·ri \ˈak-ə-ˌrī, -ˌrē\

Medical Definition of Acari

  1. :  a cosmopolitan and very large order of the class Arachnida comprising the mites and ticks most of which lack distinct demarcation into cephalothorax and abdomen and have no book lungs, many of which are parasites of plants, animals, or humans, and some of which are vectors of important diseases




Seen and Heard

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

WORD OF THE DAY

February 9, 2016

marked by high spirits and laughter

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet pince-nez spindrift kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ