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

It is better wither to be silent, or to say things of more value than silence. Sooner throw a pearl at hazard than an idle or useless word; and do not say a little in many words, but a great deal in a few.
Pythagoras