ACR Adobe Camera Raw.
Additive color A color system where the primaries of red, green and blue mix to form the other colors.
Adjustment layer Image adjustment placed on a layer.
Adobe Camera Raw Adobe’s own Raw conversion utility.
Adobe gamma A calibration and profiling utility supplied with Photoshop.
Adobe Photo Downloader Adobe’s download utility used for transferring photos from card or camera to computer. The utility ships with Bridge.
Algorithm A sequence of mathematical operations.
Aliasing The display of a digital image where a curved line appears jagged due to the square pixels.
Alpha channel Additional channel used for storing masks and selections.
Analyze/Analysis To examine in detail.
Anti-aliasing The process of smoothing ...