Wiktionary
n. (context aviation UK military English) An instrument that displays attitude of an aircraft in pitch and roll.
Wikipedia
An attitude indicator (AI), also known as gyro horizon or artificial horizon or attitude director indicator (ADI, when it has a Flight Director), is an instrument used in an aircraft to inform the pilot of the orientation of the aircraft relative to Earth's horizon. It indicates pitch (fore and aft tilt) and bank (side to side tilt) and is a primary instrument for flight in instrument meteorological conditions.
Attitude indicators are also used on manned spacecraft, where they indicate the craft's yaw angle (nose left or right) as well as pitch and roll, relative to a fixed-space inertial reference frame.
Usage examples of "attitude indicator".
He concentrated on the instruments, on the attitude indicator on the VDI, on the needle of the rate-of-climb indicator, cross-checking the radar and pressure altimeters, all the while working to keep his wings level and steering centered.
He glanced at the string, his poor man's attitude indicator and angle of attack gauge.
Mundy said, still staring at the attitude indicator but finally getting enough stability back to glance at the heads-up display and other indicators.
In an instant the attitude indicator was telling him they were rolling to the right, pitching up, and almost out of control.
His faithful alliesradio altimeter, attitude indicator, pressure, and temperature all mocked him with zero readings.
Readings from altimeter, variometer, airspeed indicator, attitude indicator--those were real.
The two small wings on the plane's attitude indicator were steady above the artificial horizon.
Glancing at his battered console, he saw that the green light was the attitude indicator.
The glow of the depth meter and attitude indicator on my wrist was barely visible through the cloudy water.
Look at the trouble I'm having coming up with a reasonable attitude indicator.