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[kuh n-den-ser] /kənˈdɛn sər/
a person or thing that condenses.
an apparatus for condensing.
any device for reducing gases or vapors to liquid or solid form.
Optics. a lens or combination of lenses that gathers and concentrates light in a specified direction, often used to direct light onto the projection lens in a projection system.
Electricity. capacitor.
Origin of condenser
First recorded in 1680-90; condense + -er1
Related forms
intercondenser, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for condenser
Historical Examples
  • Roger shut off the engine and followed by the others, he darted to the condenser.

    The Forbidden Trail Honor Willsie
  • I'm sure they'll be interested in finishing the condenser for me.

    The Forbidden Trail Honor Willsie
  • When the meteor pierced the turbine, the water in the condenser began to boil.

    All Day September Roger Kuykendall
  • It is recommended that each ship be given its own condenser.

    Operations Upon the Sea Franz Edelsheim
  • This knob here controls a condenser, and this one a transformer.

  • At R is the condenser relief, at U the relief valve for the water chambers.

    Steam Turbines Hubert E. Collins
  • Sometimes a condenser is used in connection with the blower and the air is recirculated.

    Seasoning of Wood Joseph B. Wagner
  • At what temperature must the condenser be maintained to produce a given humidity?

    Seasoning of Wood Joseph B. Wagner
  • The first condenser vessel was an improvised syringe and a tin can.

    James Watt Andrew Carnegie
  • A few miles more, and—joy unspeakable—I found a condenser and a camp.

    Spinifex and Sand David W Carnegie
British Dictionary definitions for condenser


  1. an apparatus for reducing gases to their liquid or solid form by the abstraction of heat
  2. a device for abstracting heat, as in a refrigeration unit
a lens that concentrates light into a small area
another name for capacitor
a person or device that condenses
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
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Word Origin and History for condenser

1680s, agent noun from condense. Given a wide variety of technical uses in late 18c. and 19c.

Online Etymology Dictionary, © 2010 Douglas Harper
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condenser in Medicine

condenser con·dens·er (kən-děn'sər)

  1. An apparatus for cooling a gas in order to convert it to to a liquid.

  2. An instrument for packing a material into a cavity of a tooth.

  3. The simple or compound lens on a microscope that is used to focus light on the specimen under observation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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condenser in Science
  1. An apparatus used to condense vapor, usually using cooling or pressurization.

  2. See capacitor.

  3. A mirror, lens, or combination of lenses used to gather light and direct it upon an object or through a projection lens.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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