Adjective
Partaking of the nature of water, or abounding with it; watery.
Made from, or by means of, water.
Source: Webster's dictionaryWe frequently define an acid or a base as a substance whose aqueous solution gives, respectively, a higher concentration of hydrogen ion or of hydroxide ion than that furnished by pure water. This is a very one sided definition. Gilbert N. Lewis
I am absolutely certain that life can exist in outer space, move around, find a new aqueous environment. Craig Venter
The first living organisms on Earth doubtless arose in an aqueous environment, and the course of evolution has been shaped by the proper ties of the aqueous medium in which life began. Albert L. Lehninger
The upper limit of cell size is probably set by the rate of diffusion of solute molecules in aqueous systems. Albert L. Lehninger
aqueous solutions Source: Internet
Adding concentrated acid reverses the equation, and the copper ions go back into an aqueous solution. Source: Internet