מְהִירוּת ־הָאוֹר
Meanings
Feminine noun
1. speed of light (the speed of electromagnetic radiation in a perfect vacuum) (uncountable)
Pronunciation
m'hirút ha'ór
Examples3
The speed of light is much greater than that of sound.
Light travels faster than sound.
By the time human civilization was a million years old, it had achieved mastery of faster-than-lightspeed voyages.