superfluidn.adj.

(as noun)Brit.

/ˈsuːpəˌfluːɪd/,

/ˈsjuːpəˌfluːɪd/, U.S.

/ˈsupərˌflu(w)əd/ (as adjective)Brit.

/ˌsuːpəˈfluːɪd/,

/ˌsjuːpəˈfluːɪd/, U.S.

/ˌsupərˈflu(w)əd/

Origin: Formed within English, by derivation. Etymons: super- prefix, fluid n., fluid adj.

Etymology: As noun < super- prefix + fluid n. As adjective < super- prefix + fluid adj. Compare superfluidity n.

A. n.

1. Supernatant liquid. Now rare or disused.

ΘΚΠ

the world > life > biology > laboratory analysis > material > [noun] > part of substance floating above surface

superfluid1851

supernatant1859

supernate1934

1851 J. Laurie Domest. Homœopathic Med. (ed. 6) i. 11 The greater part resolves itself into a watery superfluid.

1906 D. A. Welsh & H. G. Chapman in Jrnl. Hygiene 6 251 The addition of precipitin and of homologous proteid to the superfluid of each reaction will determine the presence of excess of precipitin or of homologous proteid in such fluid.

1923 J. A. Kolmer Pract. Text-bk. Infection, Immunity & Biol. Therapy (ed. 3) xxiv. 525 The superfluid is removed and the sediment shaken up.

2. Physics. A liquid that exhibits superfluidity.

ΘΚΠ

the world > matter > physics > mechanics > dynamics > fluid dynamics > [noun] > superfluidity > fluid exhibiting

superfluid1938

1938 P. Kapitza in Nature 8 Jan. 74/2 The helium below the λ-point enters a special state which might be called a ‘superfluid’.

1950 F. London Superfluids I. 1 The ‘superfluids’ or ‘quantum liquids’ probably exhibit the most conspicuous phenomena of macroscopic physics which have not yet been integrated into molecular theory.

1974 Nature 15 Mar. 195/2 With the discovery of the new phases of ³He, the number of known superfluids in nature has been doubled.

1982 McGraw-Hill Yearbk. Sci. & Technol. 227/1 The neutrons in a neutron star..are expected to form a p-wave-paired superfluid whose properties should be related to those of ³He-A and B.

2005 Sci. Amer. (U.K. ed.) Jan. 15/1 All bulk liquid superfluids are caused by Bose–Einstein condensation, which is the quantum process whereby a large number of particles all enter the same quantum state.

B. adj. Physics.

Exhibiting superfluidity; of or relating to superfluidity.

ΘΚΠ

the world > matter > physics > mechanics > dynamics > fluid dynamics > [adjective] > relating to or exhibiting superfluidity

superfluid1938

1938 L. Tisza in Nature 21 May 913/2 The fraction of substance consisting of atoms in the lowest energy state will perform—like a ‘superfluid’ liquid of viscosity μ ~ 0—some sort of turbulent motion the flow velocity of which does not depend on the bore of the capillary.

1968 C. G. Kuper Introd. Theory Superconductivity ii. 20 At any temperature T < T_c only a fraction..of the electrons are in the condensate (‘superfluid’ electrons) and the remainder are ‘normal’ electrons.

1974 Nature 6 Dec. 441/2 Liquid ³He..under its own saturated vapour pressure..was found to undergo a superfluid transition at 0·93 mK.

2000 Sci. Amer. (U.K. ed.) Dec. 72/1 Vortices in superfluid helium have cores only a tenth of a nanometer in diameter.

This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).

单词	superfluid
释义	superfluidn.adj. (as noun)Brit. /ˈsuːpəˌfluːɪd/, /ˈsjuːpəˌfluːɪd/, U.S. /ˈsupərˌflu(w)əd/ (as adjective)Brit. /ˌsuːpəˈfluːɪd/, /ˌsjuːpəˈfluːɪd/, U.S. /ˌsupərˈflu(w)əd/ Origin: Formed within English, by derivation. Etymons: super- prefix, fluid n., fluid adj. Etymology: As noun < super- prefix + fluid n. As adjective < super- prefix + fluid adj. Compare superfluidity n. A. n. 1. Supernatant liquid. Now rare or disused. ΘΚΠ the world > life > biology > laboratory analysis > material > [noun] > part of substance floating above surface superfluid1851 supernatant1859 supernate1934 1851 J. Laurie Domest. Homœopathic Med. (ed. 6) i. 11 The greater part resolves itself into a watery superfluid. 1906 D. A. Welsh & H. G. Chapman in Jrnl. Hygiene 6 251 The addition of precipitin and of homologous proteid to the superfluid of each reaction will determine the presence of excess of precipitin or of homologous proteid in such fluid. 1923 J. A. Kolmer Pract. Text-bk. Infection, Immunity & Biol. Therapy (ed. 3) xxiv. 525 The superfluid is removed and the sediment shaken up. 2. Physics. A liquid that exhibits superfluidity. ΘΚΠ the world > matter > physics > mechanics > dynamics > fluid dynamics > [noun] > superfluidity > fluid exhibiting superfluid1938 1938 P. Kapitza in Nature 8 Jan. 74/2 The helium below the λ-point enters a special state which might be called a ‘superfluid’. 1950 F. London Superfluids I. 1 The ‘superfluids’ or ‘quantum liquids’ probably exhibit the most conspicuous phenomena of macroscopic physics which have not yet been integrated into molecular theory. 1974 Nature 15 Mar. 195/2 With the discovery of the new phases of ³He, the number of known superfluids in nature has been doubled. 1982 McGraw-Hill Yearbk. Sci. & Technol. 227/1 The neutrons in a neutron star..are expected to form a p-wave-paired superfluid whose properties should be related to those of ³He-A and B. 2005 Sci. Amer. (U.K. ed.) Jan. 15/1 All bulk liquid superfluids are caused by Bose–Einstein condensation, which is the quantum process whereby a large number of particles all enter the same quantum state. B. adj. Physics. Exhibiting superfluidity; of or relating to superfluidity. ΘΚΠ the world > matter > physics > mechanics > dynamics > fluid dynamics > [adjective] > relating to or exhibiting superfluidity superfluid1938 1938 L. Tisza in Nature 21 May 913/2 The fraction of substance consisting of atoms in the lowest energy state will perform—like a ‘superfluid’ liquid of viscosity μ ~ 0—some sort of turbulent motion the flow velocity of which does not depend on the bore of the capillary. 1968 C. G. Kuper Introd. Theory Superconductivity ii. 20 At any temperature T < T_c only a fraction..of the electrons are in the condensate (‘superfluid’ electrons) and the remainder are ‘normal’ electrons. 1974 Nature 6 Dec. 441/2 Liquid ³He..under its own saturated vapour pressure..was found to undergo a superfluid transition at 0·93 mK. 2000 Sci. Amer. (U.K. ed.) Dec. 72/1 Vortices in superfluid helium have cores only a tenth of a nanometer in diameter. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < n.adj.1851
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