Afterglow (of a C.R.T.)
Alternative term: Persistence (of a C.R.T.)
The decaying luminescence of the screen after the stimulus has been reduced or removed.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Celsius (previously Centigrade)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM