Definition
The pilot action during the takeoff roll of smoothly applying back pressure to the elevator control to raise the nose to the takeoff pitch attitude, establishing the wing's angle of attack required for the airplane to lift off the runway.
Plain English
It's the moment during takeoff when you pull back on the controls to lift the nose so the airplane can leave the ground.
Context Anchor
Encountered during takeoff, after the airplane has accelerated on the runway and just before lift-off.
Derivation
From Latin 'rotare,' meaning to turn or revolve. In takeoff, the airplane briefly rotates around its main wheels (the lateral axis) as the nose comes up, which is where the term comes from.
Why Pilots Care
Correct rotation timing produces a positive climb while avoiding an early liftoff that can cause a stall or runway contact; late rotation wastes runway and can exceed takeoff distance limits.
Intuition Check
Rotation does not mean the airplane is turning left or right. Here it means the nose is being raised during takeoff so the airplane can lift off.
Example Sentence 1
At the calculated rotation speed, the pilot applied smooth back pressure and the airplane lifted off cleanly.
Example Sentence 2
A delayed rotation on a short runway forced the pilot to abort the takeoff before liftoff.