The sugar in your latte, say

• Substance in a chemistry experiment
• Alka-Seltzer in water, e.g
• Dissolved thing
• Salt in salt water, e.g
• Sugar in tea, e.g
• Sugar in coffee, e.g.
• It's dissolved into a solvent

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1890, "dissolved," from Latin solutus , past participle of solvere (see solve ). In botany, "free, not adhering" (1760).

WordNet Word definitions in WordNet
n. the dissolved substance in a solution; the component of a solution that changes its state

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Solute \So*lute"\, a. [L. solutus, p. p. of solvere to loosen. See Solve .] Loose; free; liberal; as, a solute interpretation. [Obs.] --Bacon. Relaxed; hence; merry; cheerful. [R.] A brow solute, and ever-laughing eye. --Young. Soluble; as, a solute salt. ...