Y
 
 Y-dimension of recorded spot
 
      In facsimile, the center-to-center distance between two recorded
      spots measured perpendicular to the recorded line.
 
 Y-dimension of scanning spot
 
      In facsimile, the center-to-center distance between two scanning
      spots measured perpendicular to the scanning line on the subject
      copy.
 
 yellow
 
      One of the colored inks used in four color printing. One of the
      subtractive process colors; reflects red and green and absorbs
      blue.
 
 yellow pages service (YPS)
 
      Directory of telephone numbers organized by type of business.
 
 YMODEM
 
      A protocol that transfers larger data blocks than the XMODEM
      protocol.
 
 YMODEM-G
 
      A series of streaming protocols designed to optimize file transfer
      via high-speed, error-correcting modems.
 
 YUVA
 
      A color model for video that describes the luminance (Y) two color
      channels (U and V) and the opacity (A).