Alka-Seltzer in water, e.g

• Sugar in coffee, e.g.
• Dissolved substance, in chemistry classes
• Substance in a chemistry experiment
• The sugar in your latte, say
• Dissolved thing
• It's dissolved into a solvent

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Solute \So*lute"\, v. t. To dissolve; to resolve. [Obs.] To absolve; as, to solute sin. [Obs.] --Bale.

Wiktionary Word definitions in Wiktionary
1 Loose; free; liberal 2 Relaxed, hence, merry; cheerful 3 Able to be dissolved; soluble 4 (context botany English) Not adhering; loose; opposed to (term adnate English) n. Any substance that is dissolved in a liquid solvent to create a solution v 1 (context ...

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