Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

Diopsis

noun
Di·​op·​sis | \ dīˈäpsə̇s\

Definition of Diopsis

: a genus of two-winged flies (group Acalyptrata) of the Old World tropics having the head produced into long lateral club-shaped projections bearing the antennae and eyes

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!

History and Etymology for Diopsis

New Latin, from di- + -opsis

Keep scrolling for more

Learn More about Diopsis

Statistics for Diopsis

Look-up Popularity

Comments on Diopsis

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

Show Comments  Hide Comments 

WORD OF THE DAY

gnomic

Listen to the pronounciation of gnomic

characterized by aphorism

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ
Love words? Need even more definitions?

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

Words at Play
Ask the Editors
Word Games