I. noun
( -s )
Etymology: Middle English, from gerund of scannen to scan
1. : scansion
2. : minute, thorough, critical, or judicial examination
3. : the process of analyzing by means of an electron beam that moves usually in successive lines the light and dark values that constitute a picture or image and of translating these values into corresponding electrical values for transmission by facsimile or television ; also : the reverse process by means of which a receiver synthesizes the picture or image
II. adjective
Etymology: from present participle of scan (I)
: minutely scrutinizing