line of sight

noun phrase

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

Examples of line of sight in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Keeping a line of sight on a drone is a typical requirement for flight safety, but NASA is developing tools that may allow these machines to fly further away from operators in populated environments more regularly. Elizabeth Howell, Space.com, 27 June 2026 The idea is to keep that information in the same line of sight as the roadway, instead of drawing the driver’s eyes down to steering wheel controls or into the menus of a touchscreen. Robert Duffer, AJC.com, 19 June 2026 When asked by prosecutor Laura Adams, Portocarrero testified that there was nothing in Pino’s line of sight that would have blocked his vision moments before the crash. Grethel Aguila, Miami Herald, 16 June 2026 Armed forces increasingly want autonomous systems that can shorten decision cycles, extend reconnaissance beyond line of sight, and continue operating in electronic warfare environments where GPS signals and communications links face disruption. Aamir Khollam, Interesting Engineering, 15 June 2026 See All Example Sentences for line of sight

Word History

First Known Use

1559, in the meaning defined at sense 1

Time Traveler
The first known use of line of sight was in 1559

Browse Nearby Words

Cite this Entry

“Line of sight.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/line%20of%20sight. Accessed 2 Jul. 2026.

Medical Definition

line of sight

noun
1
: a line from an observer's eye to a distant point
2
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