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luminous range

American  

noun

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  1. the distance at which a certain light, as that of a lighthouse, is visible in clear weather, disregarding interference from obstructions and from the curvature of the earth and depending on the power of the light.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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