Monolight

A monolight is a self-contained photographic flash lighting unit usually found in a studio. Each monolight has its own independent power source. It does not depend on a centralized power supply as a `pack and head` system does. Monolights are also independently controlled: each has its own power settings and light output. Flash power is predomin.....
Found on http://en.wikipedia.org/wiki/Monolight

Monolight

Any flash unit that is self contained, that is the flash head and power supply and all necessary hardware to make the flash work is in the flash head, is referred to as a monolight. Monolights can be used as a standard bulb or with softboxes or umbrellas to diffuse the light.
Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
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