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osmosis.

The net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane.

7 characters3 syllables approx.English language

Meaning & usage

noun/ɒzˈməʊ̯sɪs/Received-Pronunciation/ɒsˈməʊ̯sɪs/Received-Pronunciation/ɑzˈmoʊ̯sɪs/General-American/ɑsˈmoʊ̯sɪs/General-American
  1. The net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane.

    countable · uncountable
  2. Passive absorption or impartation of information, habits, etc.; the process of teaching or learning particular knowledge incidentally rather than consciously.

    countable · figuratively · uncountable
    I was reading about chickens, and I guess I learned about hawks through osmosis.
Where this word comes from

From endosmose and exosmose, both coined by French physician Henri Dutrochet in 1826; from (respectively) Ancient Greek ἔνδον (éndon, “within”) and Ancient Greek ἔξω (éxō, “outer, external”), plus Ancient Greek ὠσμός (ōsmós, “push, impulsion”), from ὠθέω (ōthéō).

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.