Pointolite
/ˈpɔɪntəlʌɪt/noun
A type of arc lamp designed to give a small but bright source of light (especially for use in projection equipment), the illumination being provided by the incandescence of a small knob of tungsten.
- A trademark in the United Kingdom..
Origin
Early 20th century; earliest use found in Illuminating Engineer. From point + o', variant of of + lite.