Dictionary

rarefaction

rarefaction

noun rar·e·fac·tion \ˌrer-ə-ˈfak-shən\

Definition of RAREFACTION

1
:  the action or process of rarefying
2
:  the quality or state of being rarefied
3
:  a state or region of minimum pressure in a medium traversed by compressional waves (as sound waves)
rar·e·fac·tion·al \-shnəl, -shə-nəl\ adjective

Origin of RAREFACTION

French or Medieval Latin; French raréfaction, from Medieval Latin rarefaction-, rarefactio, from Latin rarefacere to rarefy
First Known Use: 1572

rarefaction

noun rar·e·fac·tion \ˌrar-ə-ˈfak-shən, ˌrer-\   (Medical Dictionary)

Medical Definition of RAREFACTION

1
:  the action or process of rarefying
2
:  the quality or state of being rarefied; especially :  an increase in porosity <areas of rarefaction in the bones>
3
:  a state or region of minimum pressure in a medium transversed by compressional waves (as sound waves) <the eardrum vibrates according to the compressions and rarefactions of the sound wave>
rar·e·fac·tion·al \-shnəl, -shən-əl\ adjective

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