a. [ L. solubilis, fr. solvere, solutum, to loosen, to dissolve: cf. F. soluble. See Solve, and cf. Solvable. ] 1. Susceptible of being dissolved in a fluid; capable of solution; as, some substances are soluble in alcohol which are not soluble in water. [ 1913 Webster ]
Sugar is . . . soluble in water and fusible in fire. Arbuthnot. [ 1913 Webster ]
2. Susceptible of being solved; as, a soluble algebraic problem; susceptible of being disentangled, unraveled, or explained; as, the mystery is perhaps soluble. “More soluble is this knot.” Tennyson. [ 1913 Webster ]
3. Relaxed; open or readily opened. [ R. ] “The bowels must be kept soluble.” Dunglison. [ 1913 Webster ]
Soluble glass. (Chem.) See under Glass. [ 1913 Webster ]