superfluid

[soo-per-floo-id]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.

Origin of superfluid

First recorded in 1940–45; super- + fluid

Related formssu·per·flu·id·i·ty, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for superfluid

superfluid

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

superfluid in Science

superfluid

[sōō′pər-flōō′ĭd]

A fluid, such as liquid helium, that flows with little or no friction at temperatures close to absolute zero.