line of sight

Definition of line of sight

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

  2. 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

1559

First Known Use of line of sight

1559


Medical Dictionary

line of sight

noun

Medical Definition of line of sight

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

  2. 2:  line of vision

Learn More about line of sight


Seen and Heard

What made you want to look up line of sight? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

the point at which something begins

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
  • Which is a synonym of garner?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!