aspect ratio

[ as-pekt rey-shoh, rey-shee-oh ]

  1. Aeronautics. the ratio of the span of an airfoil to its mean chord.

  2. 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.

  1. Naval Architecture. the ratio of the height of a rudder to its fore-and-aft length.

  2. 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

Words Nearby aspect ratio Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use aspect ratio in a sentence

British Dictionary definitions for aspect ratio

aspect ratio

  1. the ratio of width to height of the picture on a television or cinema screen

  2. 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