rarefaction

Definitions

rare (thin, sparse) + -faction (a making, from fac 'make') = 'a making thin.' The -faction ending (as in satisfaction, liquefaction) means 'the act of making X.' Here it's the act of making something less dense.

Common Collocations

• 1.rarefaction wave稀疏波
• 2.zone of rarefaction稀疏区
• 3.rarefaction of gas气体稀薄化

Example Sentences

• 1.

  Sound travels through air as alternating compression and rarefaction.