su·​per·​flu·​id | \ ˌsü-pər-ˈflü-əd How to pronounce superfluid (audio) \

Definition of superfluid

: an unusual state of matter noted only in liquid helium cooled to near absolute zero and characterized by apparently frictionless flow (as through fine holes)

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Other Words from superfluid

superfluid adjective
superfluidity \ ˌsü-​pər-​flü-​ˈi-​də-​tē How to pronounce superfluidity (audio) \ noun

Examples of superfluid in a Sentence

Recent Examples on the Web

Impossible Superfluids Here on Earth, superfluids aren’t exactly commonplace. Jennifer Ouellette, Quanta Magazine, "Dark Matter Recipe Calls for One Part Superfluid," 13 June 2017 This occurs due to movement in the star's interior, which can exchange momentum between the superfluid there and the crust surrounding it. John Timmer, Ars Technica, "Three years of staring lets scientists capture a neutron star “glitch”," 11 Apr. 2018 All the particles there form a superfluid, which can flow without any friction. John Timmer, Ars Technica, "Three years of staring lets scientists capture a neutron star “glitch”," 11 Apr. 2018 Only discovered in 1983, the helium superfluid allows some for some of the weirder aspects of quantum physics to become visible to the naked eye. David Grossman, Popular Mechanics, "The Quest for Absolute Zero Turns Up Strange and Surreal Superfluids," 12 Oct. 2017 For comparison, the vorticity of tiny droplets of a superfluid tops out at about 107 per second. John Timmer, Ars Technica, "Taking quark-gluon plasma for a spin may un-break a fundamental symmetry," 2 Aug. 2017 The two teams made different assumptions about how hot the neutrons were to begin with, so their calculations for the temperature at which the superfluid state is possible are different. Lisa Grossman, WIRED, "Exotic Superfluid Found in Ultra-Dense Stellar Corpse," 25 Feb. 2011

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'superfluid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of superfluid

1938, in the meaning defined above

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Last Updated

5 Jul 2019

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Time Traveler for superfluid

The first known use of superfluid was in 1938

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