noun
: a cathode in an electron tube or fluorescent lamp that is unheated and that emits electrons when bombarded by ions or subjected to light, infrared, or ultraviolet rays
cold-cathode tube
noun
: a cathode in an electron tube or fluorescent lamp that is unheated and that emits electrons when bombarded by ions or subjected to light, infrared, or ultraviolet rays
cold-cathode tube
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012