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From Biology-Online Dictionary
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(1) Susceptible of being dissolved in some solvent, as in sugar being soluble in water (solvent).

(2) That can be solved or explained, as in a soluble problem.


Word origin: Middle English, from Old French, from Late Latin solūbilis, from Latin solvere, to loosen.

Related forms: insoluble (adjective).
Related phrases: fat-soluble vitamins, fat soluble, soluble antigen, soluble starch.

See also: solubility.