noun
: a vacuum tube (as a camera tube or electronic computer tube) that retains information for later use by having a receptive element on which an electron beam impresses signals
noun
: a vacuum tube (as a camera tube or electronic computer tube) that retains information for later use by having a receptive element on which an electron beam impresses signals
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012