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English word
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WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
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WORDNET DICTIONARY
Noun osmosis has 1 sense
- osmosis(n = noun.process) - (biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal; is a part of dialysis
is a kind of diffusion
has particulars: reverse osmosis
Derived form adjective osmotic1
CIDE DICTIONARY
osmosis, n. [NL., fr. Gr. 'wsmo`s, equiv. to 'w^sis impulse, fr. 'wqei^n to push.].
The tendency in fluids to mix, or become equably diffused, when in contact. It was first observed between fluids of differing densities, and as taking place through a membrane or an intervening porous structure. An older term for the phenomenon was Osmose .
"The more rapid flow from the thinner to the thicker fluid was then called endosmosis (formerly endosmose ), and the opposite, slower current, exosmosis (formerly exosmose ). Both are, however, results of the same force. Osmosis may be regarded as a form of molecular attraction, allied to that of adhesion. See also osmotic pressure ."
[1913 Webster]
OXFORD DICTIONARY
osmosis, n.
1 Biochem. the passage of a solvent through a semi-permeable partition into a more concentrated solution.
2 any process by which something is acquired by absorption.
1 Biochem. the passage of a solvent through a semi-permeable partition into a more concentrated solution.
2 any process by which something is acquired by absorption.
Derivative
osmotic adj. osmotically adv.
Etymology
orig. osmose, after F f. Gk osmos push