osmosis

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  • noun

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(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

References in periodicals archive ?
a, Exosmosis of ecdysial fluid and an additional molt (15 x); b, failure to shed the head capsule (30 x); c, failure to shed the exuvium (20x); d, bulging of the hindgut (10 x); and e, deformed pupa (10 x).