Dictionary.com

superfluid

[ soo-per-floo-id ]
/ ˌsu pərˈflu ɪd /
Physics.

noun

a fluid that exhibits frictionless flow, very high heat conductivity, and other unusual physical properties, helium below 2.186 K being the only known example.

adjective

of or relating to a superfluid.

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Origin of superfluid

First recorded in 1940–45; super- + fluid

OTHER WORDS FROM superfluid

su·per·flu·id·i·ty, noun

Words nearby superfluid

superficial temporal vein, superficial transverse muscle of perineum, superficies, superfine, superfix, superfluid, superfluidity, superfluity, superfluous, superfood, superfund
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for superfluid

superfluid
/ (ˌsuːpəˈfluːɪd) /

noun

physics a fluid in a state characterized by a very low viscosity, high thermal conductivity, high capillarity, etc. The only known example is that of liquid helium at temperatures close to absolute zero

adjective

being or relating to a superfluid
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

Scientific definitions for superfluid

superfluid
[ sōō′pər-flōō′ĭd ]

A fluid, such as liquid helium, that flows with little or no friction at temperatures close to absolute zero.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.