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

Plus, any objects in our line of sight that are hidden behind dense clouds of interstellar dust or gas can only be seen via their infrared emissions. — Monisha Ravisetti, Space.com, 25 Aug. 2026

According to the post, the key advantage of this approach is that, unlike visual detection, the drone does not require a direct line of sight to the road. — Vikram Mittal, Forbes.com, 22 Aug. 2026

Amazon is already certified by the Federal Aviation Administration and the company has been awarded waivers to fly drones beyond the line of sight of the pilots. — ABC News, 19 Aug. 2026

Commands reach a rover by way of relay satellites, and crater rims can block the line of sight to those relays. — Wanjiku Chebet Kanjumba, The Conversation, 13 Aug. 2026

Word History

First Known Use

1559, in the meaning defined at sense 1

Rhymes for line of sight

• actinolite
• adipocyte
• amphibolite
• anorthosite
• anthophyllite
• aragonite
• carbonatite
• cassiterite
• chalcopyrite
• cristobalite
• crocidolite
• diatomite

Medical Definition

line of sight

noun

1

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

2

: line of vision