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
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Origin and Etymology of idiosepiidae
New Latin, from Idiosepion or Idiosepius, type genus (from idio- + Greek sēpion cuttlefish bone) + -idae
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