n.
Pronunciation: ' ska-n ə r
Function: noun
Date: 1556
: one that scans: as a : a device for sensing recorded data (as in a bar code) <a supermarket scanner > b : a radio receiver that sequentially scans a range of frequencies for a signal c : a device that scans an image (as a photograph) or document (as a page of text) especially for use or storage on a computer d : a medical device for scanning a living body to collect diagnostic information ― compare CAT SCANNER