A type of compression software commonly used to back up files. The method of compression changes with the type of file, and is not recommended for photographic images because it may destroy original data Found on http://www.encyclo.co.uk/local/21048
In computing, adaptive compression is a data compression technique that dynamically adjusts the algorithm being used based on the content of the data being compressed. Found on http://www.probertencyclopaedia.com/browse/GA.HTM