Meaning of Joule-Thomson effect

Joule'-Thom'son effect"

Pronunciation: ( jl'tom'sun, joul'-), [key]
— Thermodynam. Thermodynam.
  1. the change of temperature that a gas exhibits during a throttling process, shown by passing the gas through a small aperture or porous plug into a region of low pressure. Cf. free expansion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.