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Meaning of camera tube

cam'era tube"

Pronunciation: [key]
— Television. Television.
  1. a cathode-ray tube that converts an optical image projected on its light-sensitive receptor surface into an electrical signal by a scanning process: used in television cameras. Also calledCf. image tube.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.