Associations to the word «Rarefaction»

Wiktionary

RAREFACTION, noun. A reduction in the density of a material, especially that of a fluid

Dictionary definition

RAREFACTION, noun. A decrease in the density of something; "a sound wave causes periodic rarefactions in its medium".

Wise words

Words, words, words! They shut one off from the universe. Three quarters of the time one's never in contact with things, only with the beastly words that stand for them.
Aldous Huxley