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Meaning of angle of incidence

an'gle of in'cidence

Pronunciation: [key]
  1. Also calledthe angle that a straight line, ray of light, etc., meeting a surface, makes with a normal to the surface at the point of meeting.
  2. (on an airplane) the angle, usually fixed, between a wing or tail root chord and the axis of the fuselage.
  3. See(def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.