digitize 1. To convert an image, graph, or other data into digital form for processing on a computer. 2. A device that converts an analog signal into a digital representation of the analog signal. encodes each sample into a numeric representation of the amplitude value of the sample. 3. A device that converts the position of a point on a surface... Found on http://www.wordinfo.info/words/index/info/view_unit/647/2