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aspect ratio

Aeronautics. the ratio of the span of an airfoil to its mean chord.
Digital Technology, Television. the ratio of the width of an image to its height, usually a standard ratio such as 16 to 9 or 4 to 3.
Naval Architecture. the ratio of the height of a rudder to its fore-and-aft length.
  1. Also called fineness ratio, slenderness ratio. the ratio of the mean diameter of the body of a rocket or missile to its length.
  2. the ratio of the length of the combustion chamber of a rocket motor to its diameter.
Origin of aspect ratio
1905-10 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for aspect ratio

aspect ratio

the ratio of width to height of the picture on a television or cinema screen
(aeronautics) the ratio of the span of a wing to its mean chord
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
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aspect ratio in Technology

The ratio of width to height of a pixel, image, or display screen. Square pixels (1:1) are considered preferable but displays are usually about 5:4.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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