v.
 (scans, scanning, scanned)
   - look at quickly in order to identify relevant features or information.
 - traverse with a detector or an electromagnetic beam, especially to obtain an image. 
▸cause (a beam) to traverse across a surface or object.
 ▸resolve (a picture) into its elements of light and shade in a prearranged pattern for the purposes of television transmission.
 ▸convert (a document or picture) into digital form for storage or processing on a computer.
 - analyse the metre of (a line of verse) by reading with appropriate intonation or by examining the pattern of feet or syllables. 
▸(of verse) conform to metrical principles.
 
n.
  - an act of scanning.
 - a medical examination using a scanner. 
▸an image obtained by scanning or with a scanner.
 
 
  Derivative
  
  Etymology
  ME: from L. scandere ‘climb’ (in late L. ‘scan (verses)’), by analogy with the raising and lowering of one's foot when marking rhythm; later arose the senses ‘analyse’ and ‘look at searchingly’.