Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The width-to-height ratio of a film or television image.
  • n. The span-to-mean-chord ratio of an airfoil.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The ratio of an object's longest dimension to its next-longest dimension.
  • n. The ratio of width to height in a flat surface or 2-dimensional abstract construction, such as an image, character, or pixel. 4:3 (or 1.33:1) is the standard ratio for NTSC video. 1.85:1 and 2.35:1 are the most common aspect ratios for motion pictures.

from the GNU version of the Collaborative International Dictionary of English

  • The ratio of the long to the short side of an aëroplane, aërocurve, or wing.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the ratio of the width to the height of a tv picture

Etymologies

aspect + ratio (Wiktionary)

Examples

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  • (n): in filmography, the proportions of the frame. In 16mm and 35mm the camera photographs a slightly square image, with an aspect ratio of 1.33 to 1. In 35mm the image is usually shot with the Academy Aperture and then masked in the projector to produce a wider image: 1.85 in the U.S. and 1.66 in Europe.

    January 17, 2009