Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A fluid, such as a liquid form of helium, exhibiting a frictionless flow at temperatures close to absolute zero.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A substance, such as liquid helium, that exhibits superfluidity.
  • adj. Of, pertaining to, or exhibiting superfluidity.

Etymologies

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