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Glossary: ASPECT RATIO

The ratio of width to height of a display or screen. The most common are 4:3 or 1.33:1 and 16:9 or 1.78:1 (also known as video widescreen).

Note that High Definition material is in "wide screen" which means a minimum of 16:9 aspect ratio and sometimes 2.35:1.

Aberration
AC-3
Active Matrix
Active Video
ADC
Addressable Resolution
Aliasing
ALIS
Ambient Light
Anamorphic
ANSI
ANSI Lumens
Aperture
Apochromatic
Audio In and Out
Authoring Systems
AVI

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