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Chord
- In music theory a chord is a number of pitches, usually at least three, sounded simultaneously (or nearly so). Some particular kinds of chord are named according to the notes of the scale that they contain.
- In reference to aircraft, chord refers to the distance between the front and back of a wing, referred to as the leading and trailing edges, measured in the direction of the normal airflow. The term chord was selected due to the curved nature of the wings surface.
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