1. (n.) One who, or that which, condenses.

2. (n.) An instrument for condensing air or other elastic fluids, consisting of a cylinder having a movable piston to force the air into a receiver, and a valve to prevent its escape.

3. (n.) An instrument for concentrating electricity by the effect of induction between conducting plates separated by a nonconducting plate.

4. (n.) A lens or mirror, usually of short focal distance, used to concentrate light upon an object.

5. (n.) An apparatus for receiving and condensing the volatile products of distillation to a liquid or solid form, by cooling.

6. (n.) An apparatus, separate from the cylinder, in which the exhaust steam is condensed by the action of cold water or air.

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