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 - so innocent and powerless as they are, as standing in a dictionary, how potent for good and evil they become in the hands of one who knows how to combine them.
Nathaniel Hawthorne