Plain English Meaning
A way of working out which direction to point the aircraft and how fast it will actually travel over the ground, by drawing arrows for the wind, the desired course, and the aircraft's speed through the air, and seeing how they add together.
Full Definition
A flight planning method that solves for heading and groundspeed by representing the wind, the aircraft's intended track, and the aircraft's airspeed as vectors — arrows that each show both a direction and a magnitude — and combining them graphically or mathematically to find the resulting flight path.
Context Anchor
Seen in flight planning and , especially when figuring out how wind changes the direction and speed of a planned .