line of sight

noun phrase

Definition of line of sight

1 : a line from an observer's eye to a distant point
2 : the line between two points specifically : the straight path between a transmitting antenna (as for radio or television signals) and a receiving antenna when unobstructed by the horizon

First Known Use of line of sight

1559, in the meaning defined at sense 1

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Time Traveler

The first known use of line of sight was in 1559

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Cite this Entry

“Line of sight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/line%20of%20sight. Accessed 11 Jul. 2020.

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More Definitions for line of sight

line of sight

noun

Medical Definition of line of sight

1 : a line from an observer's eye to a distant point

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