aspect ratio

noun

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.

Rocketry.

Also called fineness ratio, slenderness ratio.the ratio of the mean diameter of the body of a rocket or missile to its length.
the ratio of the length of the combustion chamber of a rocket motor to its diameter.

Origin of aspect ratio

First recorded in 1905–10

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for aspect ratio

aspect ratio

noun

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