mercury-vapor lamp

1. 1.

   ultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vapor

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Questions about mercury-vapor lamp

What does mercury-vapor lamp mean?

mercury-vapor lamp means "ultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vapor".

Is mercury-vapor lamp a common word?

mercury-vapor lamp is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.