\A"que*ous\, a. [Cf. F. aqueux, L. aquosus, fr. aqua.
See {Aqua}, {Aquose}.]
1. Partaking of the nature of water, or abounding with it;
   watery.
         The aqueous vapor of the air.         --Tyndall.
2. Made from, or by means of, water.
         An aqueous deposit.                   --Dana.
{Aqueous extract}, an extract obtained from a vegetable
   substance by steeping it in water.
{Aqueous humor} (Anat.), one the humors of the eye; a limpid
   fluid, occupying the space between the crystalline lens
   and the cornea. (See {Eye}.)
{Aqueous rocks} (Geol.), those which are deposited from water
   and lie in strata, as opposed to {volcanic} rocks, which
   are of igneous origin; -- called also {sedimentary} rocks.