superluminaladj.

Brit.

/ˌsuːpəˈluːmᵻnl/,

/ˌsjuːpəˈljuːmᵻnl/, U.S.

/ˌsupərˈlumən(ə)l/

Origin: A borrowing from Latin, combined with English elements. Etymons: super- prefix, Latin lūmin- , lūmen , -al suffix¹.

Etymology: < super- prefix + classical Latin lūmin-, lūmen light (see lumen n.) + -al suffix¹.In the following quot. the spelling superluminal shows an error for superliminal:1909 Pearson's Mag. Feb. 191/2 He finds that the manifestations of the mediums are not progressive, but devolutionary, infra- and not super-normal, sub- and never super-luminal.

Physics and Astronomy.

Designating a speed greater than that of light; having such a speed. Also: designating astronomical objects that appear to have such a speed but are thought not to in reality.An apparent faster-than-light speed typically occurs when an observed object is moving at almost the speed of light on a path that makes a narrow angle with the line of sight.

ΘΚΠ

the world > movement > rate of motion > [adjective] > at speed of light > greater or less than the speed of light

superluminal1959

subluminal1967

1959 K. R. Popper Logic of Sci. Discov. ix. 236 Saying that they are ‘spread with super-luminal velocity’ is about as helpful as saying that twice two turns with super-luminal velocity into four.

1975 Physics Bull. Jan. 13/1 The prospect of discovering super~luminal particles is so appealing that the search is started afresh whenever there is an improvement or extension of experimental technique.

1980 Sci. Amer. Aug. 76/2 The expansion that appears from the earth to be superluminal would be relativistic but still subluminal when measured by the slower clocks of the source itself.

1989 I. Asimov Nemesis (1990) 164 I want a superluminal drive, one that is far beyond the speed of light.

1993 Sci. Amer. (U.K. ed.) May 75/1 3C279 was already known as a ‘superluminal’ quasar, one in which parts of the object seem, in radio images, to be moving faster than the speed of light.

2002 Astron. in UK 19/3 Examples of the remarkable kind of source which can be studied by this means are the ‘superluminal’ radio jets ejected from active galactic nuclei.

2006 F. Wilczek Fantastic Realities 22 Very early in its history, the universe underwent a period of superluminal expansion, or inflation.

Derivatives

ˌsuperˈluminally adv. faster than light.

ΚΠ

1975 Physics Lett. A. 51 140/1 For Klein–Gordon tachyons.., despite singularities in the upper half-plane and superluminal group velocities, signals do not propagate superluminally.

1994 Nature 10 Feb. 509/1 If..the influence is communicated superluminally, then time machines must surely be just around the corner.

2005 Sci. Amer. (U.K. ed.) July 6/2 The early universe was expanding very quickly and the light was emitted in a region that was receding superluminally.

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

单词	superluminal
释义	superluminaladj. Brit. /ˌsuːpəˈluːmᵻnl/, /ˌsjuːpəˈljuːmᵻnl/, U.S. /ˌsupərˈlumən(ə)l/ Origin: A borrowing from Latin, combined with English elements. Etymons: super- prefix, Latin lūmin- , lūmen , -al suffix¹. Etymology: < super- prefix + classical Latin lūmin-, lūmen light (see lumen n.) + -al suffix¹.In the following quot. the spelling superluminal shows an error for superliminal:1909 Pearson's Mag. Feb. 191/2 He finds that the manifestations of the mediums are not progressive, but devolutionary, infra- and not super-normal, sub- and never super-luminal. Physics and Astronomy. Designating a speed greater than that of light; having such a speed. Also: designating astronomical objects that appear to have such a speed but are thought not to in reality.An apparent faster-than-light speed typically occurs when an observed object is moving at almost the speed of light on a path that makes a narrow angle with the line of sight. ΘΚΠ the world > movement > rate of motion > [adjective] > at speed of light > greater or less than the speed of light superluminal1959 subluminal1967 1959 K. R. Popper Logic of Sci. Discov. ix. 236 Saying that they are ‘spread with super-luminal velocity’ is about as helpful as saying that twice two turns with super-luminal velocity into four. 1975 Physics Bull. Jan. 13/1 The prospect of discovering super~luminal particles is so appealing that the search is started afresh whenever there is an improvement or extension of experimental technique. 1980 Sci. Amer. Aug. 76/2 The expansion that appears from the earth to be superluminal would be relativistic but still subluminal when measured by the slower clocks of the source itself. 1989 I. Asimov Nemesis (1990) 164 I want a superluminal drive, one that is far beyond the speed of light. 1993 Sci. Amer. (U.K. ed.) May 75/1 3C279 was already known as a ‘superluminal’ quasar, one in which parts of the object seem, in radio images, to be moving faster than the speed of light. 2002 Astron. in UK 19/3 Examples of the remarkable kind of source which can be studied by this means are the ‘superluminal’ radio jets ejected from active galactic nuclei. 2006 F. Wilczek Fantastic Realities 22 Very early in its history, the universe underwent a period of superluminal expansion, or inflation. Derivatives ˌsuperˈluminally adv. faster than light. ΚΠ 1975 Physics Lett. A. 51 140/1 For Klein–Gordon tachyons.., despite singularities in the upper half-plane and superluminal group velocities, signals do not propagate superluminally. 1994 Nature 10 Feb. 509/1 If..the influence is communicated superluminally, then time machines must surely be just around the corner. 2005 Sci. Amer. (U.K. ed.) July 6/2 The early universe was expanding very quickly and the light was emitted in a region that was receding superluminally. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < adj.1959
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