Soluble \Sol"u*ble\, 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.

Sugar is . . . soluble in water and fusible in fire. --Arbuthnot.

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.

3. Relaxed; open or readily opened. [R.]

``The bowels must be kept soluble.'' --Dunglison.

Soluble glass. (Chem.) See under Glass.

Source: Webster's Revised Unabridged Dictionary (1913)