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  • squid
    squid
    noun
    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 centimeters) to 60–80 feet (18–24 meters).
  • SQUID
    SQUID
    noun
    superconducting quantum interference device: a device that senses minute changes in magnetic fields, used to indicate neural activity in the brain.

squid

1 American  
[skwid] / skwɪd /

noun

  • squid,
    plural
  • squids
    plural
  1. 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 centimeters) to 60–80 feet (18–24 meters).


SQUID 2 American  
[skwid] / skwɪd /

noun

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


squid 1 British  
/ skwɪd /

noun

  1. 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) See also cuttlefish

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (intr) (of a parachute) to assume an elongated squidlike shape owing to excess air pressure

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
SQUID 2 British  

abbreviation

  1. superconducting quantum interference device

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

squid 3 British  
/ skwɪd /

noun

  1. slang a pound sterling

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of squid1

First recorded in 1605–15; origin uncertain

Origin of SQUID2

First recorded in 1965–70

Explanation

A squid is a sea creature that's similar to an octopus but has ten arms instead of eight—including two extra tentacles they use for grabbing their prey. The largest squid ever found was nearly 60 feet long! Like their octopus relatives, squid are cephalopods, or mollusks with prominent heads and many arms. Squid can swim extremely fast by sucking in water and propelling it out (just like jet propulsion), and their skin can change color so they blend in with their surroundings. Squid squirt a kind of dark ink to confuse predators; some language experts believe that squid was once sailors' slang for squirt.

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Vocabulary lists containing squid

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Blue sharks can reach more than three metres in length and feed in open water on fish, squid, smaller sharks and sea birds.

From BBC Aug. 13, 2026

The imagery in “Minions & Monsters” can be ingenious, like the galumphing tentacles on an oversize squid or the close-up shot that goes inside a director’s megaphone to see his tongue waggling at the screen.

From Los Angeles Times Jul. 1, 2026

Overall, the study identified 226 species spanning 11 major animal groups, including squid, marine mammals, cnidarians, echinoderms, and unusual deep-sea fish.

From Science Daily May 14, 2026

For decades, palaeontologists believed that the largest ocean predators were vertebrates with backbones such as fish and reptiles while invertebrates like octopuses and squid played supporting roles.

From BBC Apr. 23, 2026

There was no sign of any of the other champions, merpeople, Ron — nor, thankfully, the giant squid.

From "Harry Potter And The Goblet Of Fire" by J. K. Rowling

At its core lies a sensitive magnetometer, known as a SQUID.

From Economist Jan. 11, 2018

That would create a magnetic field large enough to spot with a SQUID.

From Economist Jan. 26, 2017

What is used is a sensor called a SQUID, for superconducting quantum interference device.

From Textbooks Aug. 12, 2015

The squids lose their transparent bodies as they get older, and dying adults have been recorded before by fishermen, but a colossal squid hadn’t before been seen alive at such a depth.

From Los Angeles Times Apr. 17, 2025

The Natural History Museum has suggested it is hard to estimate the global population of colossal squids.

From BBC Apr. 16, 2025

They encountered an immense flurry of different salps that were doing their nightly migration to the surface -- and many photobombing sharks, squids and crustaceans, Sutherland noted.

From Science Daily May 15, 2024

It’s possible the creatures were giant squids, or pinnipeds, like seals or sea lions.

From National Geographic Dec. 28, 2023

He used it to haul squids and he liked a fresh breeze to blow in his face.

From "Cannery Row" by John Steinbeck

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