solute

(sŏl'yūt, sō'lūt)
n.
A substance dissolved in another substance, usually the component of a solution present in the lesser amount.

adj.
Being in solution; dissolved.

[From Middle English, loose, porous, from Latin solūtus, past participle of solvere, to loosen.]

The substance dissolved in a solvent in forming a solution.

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(sol′yōōt)
n

The dissolved (usually the less abundant) constituent of a solution.

A substance dissolved in a solvent to form a solution.

The substance that is dissolved in a liquid (solvent) to form a solution.

• s. diuresis — increase in the volume of urine excreted as a result of an increase in the glomerular filtrate of any osmotically active solute.