Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

Idiosepiidae

plural noun
Id·​i·​o·​se·​pi·​idae | \ˌidē(ˌ)ōsəˈpīəˌdē\

Definition of Idiosepiidae 

: a family of squids that includes a single tiny squid (Idiosepius pygmaeus or Idiosepion pygmaeum) of the Indian ocean which lacks an internal shell and is considerably less than an inch in length

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 Idiosepiidae

New Latin, from Idiosepion or Idiosepius, type genus (from idio- + Greek sēpion cuttlefish bone) + -idae

Keep scrolling for more

Learn More about Idiosepiidae

Share Idiosepiidae

Statistics for Idiosepiidae

Look-up Popularity

Comments on Idiosepiidae

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

Show Comments  Hide Comments 

WORD OF THE DAY

lunette

the figure or shape of a crescent moon

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Add Diction

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