0 to become less solid or dense; to make something do this:
The primordial cosmic soup is full of sound waves compressing and rarefying matter and light.
It is not a matter that should be left to the rarefied atmosphere of academics and realm of the economists, policy-makers, and legislators.
The faecal samples of all primate species were rarefied to the abundance level of the moustached monkey, the primate species with the fewest faecal samples.
Consequently, the negative dust and the plasma ions are compressed, while the electrons are rarefied.
This can only occur if the cold electrons are compressed and the hot electrons rarefied, and, therefore, the potential must form a dip.
If the heavy species is negatively charged, the potential exhibits a dip and the heavies and protons are compressed whilst the electrons are rarefied.
The result, as in modernist styles of performance, was music so rarefied that it precluded engagement with an audience, and encouraged only awestruck contemplation.
We will present the latest measurements of plasma temperatures and heating timescales and new rarefied flow models to explain the observations.
The interactions between a moving body in space and its highly rarefied plasma environment are one of the basic problems in space plasma physics.
