line of sight: Meaning and Definition of
line' of sight'
- Also calledan imaginary straight line running through the aligned sights of a firearm, surveying equipment, etc.
- an imaginary line from an observer to a celestial body, coincident with the path traveled by light rays receivedfrom the body.
- a straight line connecting two points sufficiently high and near one another so that the line is entirely above the surface of the earth.