lightspeed en · NOUN
Pronunciation
- (US) audio
Etymology
From light + speed.
Meanings
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(countable, uncountable) The speed of light (in vacuum unless another medium is specified).
He paused, then finished, “with the drive from the Linz, he can do over 500 lightspeeds to meet us.
2005, W. Strawn Douglas, Oracle And Other Stories, page 134:If we're going to a world a hundred light-years from here at near lightspeed, we spend according to our own perceptions, only a few minutes doing so and arrive only a few minutes older.
1994, Ursula K. Le Guin, A Fisherman of the Inland Sea, Victor Gollancz (UK), published 1996, →ISBN, page 7:
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(colloquial, countable, figuratively, uncountable) An extremely fast speed.
In recent years, other activist terms have followed light-speed trajectories. The term “Latinx” overtook academic institutions and briefly became fashionable in the media, still prevalent in some influential publications, like The New Yorker, even though only 3 percent of Hispanics (or Latinos, if you prefer) use it.
2022 October 23, Pamela Paul, “Let’s Say Gay”, in The New York Times:
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| lightspeeds | Number=Plur | lexicographic | |
| light speed | alternative | lexicographic |
Deriveds
Synonyms
speed of light · speed of light
Translations (33)
ar سُرْعَةْ اَلضَّوْء (the speed of light) · hu fénysebesség (the speed of light) · pt velocidade da luz (the speed of light) · sv ljushastighet (the speed of light) · ru ско́рость све́та (the speed of light) · ro viteza luminii (the speed of light) · da lysets hastighed (the speed of light) · ja 光速 (the speed of light) · el ταχύτητα του φωτός (the speed of light) · it velocità della luce (the speed of light) · fi valonnopeus (the speed of light) · fr vitesse de la lumière (the speed of light) · tr ışık hızı (the speed of light) · bg ско́рост на светлина́та (the speed of light) · th ความเร็วแสง (the speed of light) · et valguse kiirus (the speed of light) · br tizh al luc'h (the speed of light) · nl snelheid van het licht (the speed of light) · cmn 光速 (the speed of light) · fa سرعت نور (the speed of light) · vi tốc độ ánh sáng (the speed of light) · eo lumrapido (the speed of light) · sq shpejtësia e dritës (the speed of light) · lt šviesos greitis (the speed of light) · es velocidad lumínica (the speed of light) · lv gaismas ātrums (the speed of light) · es velocidad de la luz (the speed of light) · is ljóshraði (the speed of light) · mk брзина на светлината (the speed of light) · pl prędkość światła (the speed of light) · la velocitas luminis (the speed of light) · ko 광속 (the speed of light) · de Lichtgeschwindigkeit (the speed of light)