plural noun
An·​isop·​tera | \ ˌaˌnīˈsäptərə \

Definition of Anisoptera

: a suborder of Odonata comprising the dragonflies that are larger stouter members of the order, hold the wings horizontally in repose, and have rectal gills during the naiad stage — compare zygoptera

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 Anisoptera

1831, in the meaning defined above

History and Etymology for Anisoptera

New Latin, from anis- entry 1 + -ptera

Keep scrolling for more

Learn More about Anisoptera

Time Traveler for Anisoptera

Time Traveler

The first known use of Anisoptera was in 1831

See more words from the same year

Statistics for Anisoptera

Cite this Entry

“Anisoptera.” Dictionary, Merriam-Webster, Accessed 22 Feb. 2020.

Comments on Anisoptera

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

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

Love words? Need even more definitions?

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