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Noun: mercury-vapour lamp
Usage: Brit, Cdn (US: mercury-vapor lamp)
  1. Ultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vapour
    - mercury-vapor lamp [US]

Derived forms: mercury-vapour lamps

Type of: ultraviolet lamp, ultraviolet source

Encyclopedia: Mercury-vapour lamp