Arc Lamp Definition
    noun
  
 An electric light in which a current traverses a gas between two incandescent electrodes and generates an arc that produces light.
 American Heritage 
A lamp in which brilliant light is produced by maintaining an arc between two electrodes, used as a spotlight, searchlight, etc.
 Webster's New World 
Synonyms: 
  - arc light
 
Other Word Forms of Arc Lamp
Noun
Singular:
 arc lampPlural:
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