aqueous
adj.adj. describing something that is made of water or contains water. Scientists use this word to talk about liquids where water is the main part.
adj. relating to, similar to, or dissolved in water. Often used in chemical contexts to describe a solution where water is the solvent.
The chemist prepared an aqueous solution for the experiment.
Plants absorb nutrients from the soil in an aqueous form through their root systems.
The reaction occurs most efficiently in an aqueous environment, as the polar nature of the water molecules stabilizes the transition state of the reactants.
Formed from Latin aqua + -ous (or from Medieval Latin aqueus), partly the analogy of Middle French aqueux (itself actually from Latin aquosus). Or based on the analogy of Latin terreus from terra.
Typically used in technical or scientific contexts; often precedes the noun 'solution'.