su·per·flu·id noun \ˌsü-pər-ˈflü-əd\
: 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)
— superfluid adjective
— su·per·flu·id·i·ty \-flü-ˈi-də-tē\ noun
First Known Use of SUPERFLUID
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