• synonyms


[ ek-sos-moh-sis, ek-soz- ]
/ ˌɛk sɒsˈmoʊ sɪs, ˌɛk sɒz- /


Biology. osmosis toward the outside of a cell or vessel.
Physical Chemistry. the flow of a substance from an area of greater concentration to one of lower concentration (opposed to endosmosis).

Nearby words

exorcist, exorcize, exordium, exoserosis, exoskeleton, exosmosis, exosphere, exospore, exosporium, exostosis, exostosis cartilaginea

Origin of exosmosis

1830–40; Latinization of now obsolete exosmose < French; see ex-2, osmosis
Related formsex·os·mot·ic [ek-sos-mot-ik, -soz-] /ˌɛk sɒsˈmɒt ɪk, -sɒz-/, adjectiveex·os·mot·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for exosmosis


/ (ˌɛksɒzˈməʊsɪs, -sɒs-) /


biology osmosis in which water flows from a cell or organism into the surrounding solutionCompare endosmosis
Derived Formsexosmotic (ˌɛksɒzˈmɒtɪk, -sɒs-) or exosmic (ɛkˈsɒzmɪk, -ˈsɒs-), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for exosmosis


[ ĕk′sŏz-mōsĭs, -sŏs- ]


The passage of a fluid through a semipermeable membrane toward a solution of lower concentration, especially the passage of water through a cell membrane into the surrounding medium.
Related formsex′os•motic (-mŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.