ˈfōd.ō+ˌ- noun
Etymology: phot- + tube
: an electron tube having a photoemissive cathode whose released electrons are drawn to the anode by reason of its positive potential
ˈfōd.ō+ˌ- noun
Etymology: phot- + tube
: an electron tube having a photoemissive cathode whose released electrons are drawn to the anode by reason of its positive potential
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012