Noun
a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen
Source: WordNetIllinois Manufacturers Directory, Manufacturers' News, Inc., Chicago, IL, 1962, p. 1108 In 1963, it introduced the first rectangular color picture tube. Source: Internet
Starting in the late 1950s, picture tube phosphors would sacrifice saturation for increased brightness; this deviation from the standard at both the receiver and broadcaster was the source of considerable color variation. Source: Internet
The cathode ray tube is a Samsung model 240RB40 monochrome unit measuring 9 × 11 inches, displaying a picture of 240 mm diagonal; it is an off-the-shelf picture tube manufactured for small black/white television sets. Source: Internet