RAREFACTION

n.[See Rarefy. ] The act or process of expanding or distending bodies, by separating the parts and rendering the bodies more rare or porous, by which operation they appear under a larger bulk, or require more room, without an accession of new matter; opposed to condensation; as the rarefaction of air.

RAREFACTION

Rar `e *fac "tion, n. Etym: [Cf. F. raréfaction. See Rarefy. ]

rarefaction

rar e fac tion |ˌre (ə )rəˈfakSHən ˈˌrɛrəˈˌfækʃən |(also rarifaction ) ▶noun diminution in the density of something, esp. air or a gas. • Medicine the lessening of density of tissue, esp. of nervous tissue or bone. ORIGIN early 17th cent.: from medieval Latin rarefactio (n- ), from the verb rarefacere ‘grow thin, become rare. ’

rarefaction

rarefaction |ˌrɛːrɪˈfakʃ (ə )n | ▶noun [ mass noun ] reduction in the density of something, especially air or a gas. • Medicine the lessening of density of tissue, especially of nervous tissue or bone. ORIGIN early 17th cent.: from medieval Latin rarefactio (n- ), from the verb rarefacere ‘grow thin, become rare ’.

raréfaction

raréfaction n. f. nom féminin Fait de devenir rare. : La raréfaction des logements à louer.