(n.) The act or process of rarefying; the state of being rarefied; -- opposed to condensation; as, the rarefaction of air.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). rarefaction. Retrieved September 21, 2026, from http://smartdefine.org/rarefaction/definitions/2052664 |
| Chicago | Webster's. 2011. "rarefaction" http://smartdefine.org/rarefaction/definitions/2052664 (accessed September 21, 2026). |
| Harvard | Webster's 2011, rarefaction, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/rarefaction/definitions/2052664>. |
| MLA | Webster's. "rarefaction" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/rarefaction/definitions/2052664> |