retrace line

retrace line

[′rē‚trās ‚līn]
(electronics)
The line traced by the electron beam in a cathode-ray tube in going from the end of one line or field to the start of the next line or field. Also known as return line.

retrace line

The line followed by the beam of electrons in a cathode-ray tube after it ends one line and returns to the start of the next line. Also called a fly-back