mercury-vapour lamp

noun

a lamp in which an electric discharge through a low pressure of mercury vapour is used to produce a greenish-blue light. It is used for street lighting and is also a source of ultraviolet radiation

Nearby words

  1. mercury mass,
  2. mercury poisoning,
  3. mercury program,
  4. mercury switch,
  5. mercury-vapor lamp,
  6. mercy,
  7. mercy flight,
  8. mercy killing,
  9. mercy seat,
  10. mercy stroke

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012