Meaning

3 senses
  1. (not comparable)Of or pertaining to the lumen

  2. (not comparable)Of or pertaining to the nature of light

  3. (not comparable)Light-speed; having the speed of light (usually in the void)

Origin

From Latin lumina (“lights”) + English -al.

From Latin lumina (“lights”) + English -al.

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luminal — meaning, examples, forms, synonyms | Krumeto