Noun picture tube has 1 sense
  1. kinescope, picture tube, television tube - a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen
    --1 is a kind of cathode-ray tube, CRT
    --1 is a part of
     television receiver, television, television set, tv, tv set, idiot box, boob tube, telly, goggle box
    --1 has particulars:
     color tube, colour tube, color television tube, colour television tube, color TV tube, colour TV tube
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