Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of rarefaction is as below...

Vacuum :: Vacuum (n.) The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch..

Rarefaction :: Rarefaction (n.) The act or process of rarefying; the state of being rarefied; -- opposed to condensation; as, the rarefaction of air..

Aerometry :: Aerometry (n.) The science of measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation; pneumatics..

Rarification :: Rarification (n.) See Rarefaction.

Enlarge :: Enlarge (v. i.) To grow large or larger; to be further extended; to expand; as, a plant enlarges by growth; an estate enlarges by good management; a volume of air enlarges by rarefaction..

Elatrometer :: Elatrometer (n.) An instrument for measuring the degree of rarefaction of air contained in the receiver of an air pump.

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