angle of incidence
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noun
Also called incidence. Optics, Physics. the angle that a straight line, ray of light, etc., meeting a surface, makes with a normal to the surface at the point of meeting. Abbreviation: aoiCompare angle of reflection.
(on an airplane) the angle, usually fixed, between a wing or tail root chord and the axis of the fuselage.
Chiefly British. angle of attack (def. 1).
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QUIZ YOURSELF ON PARENTHESES AND BRACKETS APLENTY!
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Question 1 of 7
Let’s start with some etymology: What are the origins of the typographical word “bracket”?
First appeared around 1750, and is related to the French word “braguette” for the name of codpiece armor.
First appeared in 1610, based on the French word “baguette” for the long loaf of bread.
First appeared in 1555, and is related to the French word “raquette” for a netted bat.
TAKE THE QUIZ TO FIND OUT Origin of angle of incidence
First recorded in 1620–30
Words nearby angle of incidence
angle of dip, angle of eccentricity, angle of elevation, angle-off, angle of friction, angle of incidence, angle of iris, angle of jaw, angle of lag, angle of lead, angle of pitch
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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British Dictionary definitions for angle of incidence
angle of incidence
noun
the angle that a line or beam of radiation makes with the normal to the surface at the point of incidence
another name for angle of attack
Also called: rigging angle of incidence the angle between the chord line of an aircraft wing or tailplane and the aircraft's longitudinal axis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for angle of incidence
angle of incidence
The angle formed by a ray or wave, as of light or sound, striking a surface and a line perpendicular to the surface at the point of impact.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.