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.

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, superfortress

British Dictionary definitions for superfluidity (1 of 2)

superfluidity
/ (ˌsuːpəfluːˈɪdɪtɪ) /

noun

physics the state of being or property of becoming a superfluid

British Dictionary definitions for superfluidity (2 of 2)

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

Scientific definitions for superfluidity

superfluid
[ sōō′pər-flōō′ĭd ]

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