	Site Map \| FAQ in Daily Almanac for May 27, 2012
Skip Navigation Home Asian Pacific American Heritage Atlas Encyclopedia Dictionary Thesaurus Features Quizzes Timelines Countries

| Share

Thesaurus

Synonyms for rarefaction

1. rarefaction, concentration: usage: a decrease in the density of something; "a sound wave causes periodic rarefactions in its medium"

See also: rarefaction (Dictionary)