Last Updated
：2025/11/20
speed of light
Noun
colloquial
figuratively
Japanese Meaning
（物理学）電磁放射の速度で、真空中では299,792,458メートル毎秒と定義される速度。 / （口語、比喩的表現）非常に高速な状態や動作、極めて速いスピード。
Sense（1）
Sense（2）
（ plural ）
（ abbreviation common-gender ）
Quizzes for review
(physics) The speed of electromagnetic radiation; in a perfect vacuum it is defined as 299,792,458 metres per second / (colloquial, figuratively) A very rapid speed.
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speed of light
The speed of light limits how fast information can travel between stars.
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The speed of light limits how fast information can travel between stars.
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