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Noun: mercury-vapor lamp
Usage: US (elsewhere: mercury-vapour lamp)
  1. Ultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vapor
    "Mercury-vapor lamps are often used for street lighting due to their efficiency";
    - mercury-vapour lamp [Brit, Cdn]

Derived forms: mercury-vapor lamps

Type of: ultraviolet lamp, ultraviolet source

Encyclopedia: Mercury-vapor lamp