Idiosepiidae

plural noun

Id·​i·​o·​se·​pi·​idae

ˌidē(ˌ)ōsəˈpīəˌdē

: 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

Word History

Etymology

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

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!