noun, plural (especially collectively) squid (especially referring to two or more kinds or species) squids.
any of several ten-armed cephalopods, as of the genera Loligo and Ommastrephes, having a slender body and a pair of rounded or triangular caudal fins and varying in length from 4–6 inches (10–15 cm) to 60–80 feet (18–24 meters).

1605–15; origin uncertain

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superconducting quantum interference device: a device that senses minute changes in magnetic fields, used to indicate neural activity in the brain.


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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
squid1 (skwɪd)
n , pl squid, squids
1.  See also cuttlefish any of various fast-moving pelagic cephalopod molluscs of the genera Loligo, Ommastrephes, etc, of most seas, having a torpedo-shaped body ranging from about 10 centimetres to 16.5 metres long and a pair of triangular tail fins: order Decapoda (decapods)
vb , squid, squids, squids, squidding, squidded
2.  (intr) (of a parachute) to assume an elongated squidlike shape owing to excess air pressure
[C17: of unknown origin]

squid2 (skwɪd)
slang (Brit) a pound sterling
[C20: rhyming slang for quid]

abbreviation for
superconducting quantum interference device

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

marine mollusk, 1613, of unknown origin; perhaps a sailors' variant of squirt, so called for the "ink" it squirts out.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
superconducting quantum interference device
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences for squid
Feeding habits cobia feed primarily on crabs, squid and other fish.
As no such cuttlefish exists, it is probable the creature described was a giant squid.
Images for squid
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