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

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

conspicuously offensive

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time-traveler-quiz-which-word-came-first
  • Which came first?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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!