an electron tube that receives a pattern of radiation, as infrared, ultraviolet, or x-ray, on a photosensitive surface and reproduces the pattern on a fluorescent screen.
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Origin of image tube
First recorded in 1935–40
Also called im·age-con·vert·er tube [im-ij-kuh n-vur-ter] /ˈɪm ɪdʒ kənˌvɜr tər/.
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British Dictionary definitions for image tube
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012