line of fixation n.
An imaginary line joining the optical point of fixation with the fovea and passing through the nodal point.
noun 1. (formerly) a line of force in a magnetic field.
noun, Navigation. 1. a line connecting all the possible positions of a ship or aircraft, as determined by a single observation. Abbreviation: LOP.
noun, Football. 1. an imaginary line parallel to the goal lines that passes from one sideline to the other through the point of the football closest to the goal line of each team. noun 1. (American football) an imaginary line, parallel to the goal lines, on which the ball is placed at the start of […]
noun 1. Also called line of sighting. an imaginary straight line running through the aligned sights of a firearm, surveying equipment, etc. 2. Astronomy. an imaginary line from an observer to a celestial body, coincident with the path traveled by light rays receivedfrom the body. 3. Radio. a straight line connecting two points sufficiently high […]