That can be dissolved, especially easily dissolved: soluble fats.
Possible to solve or explain: soluble mysteries.
[Middle English, from Old French, from Late Latin solūbilis, from Latin solvere, to loosen; see leu- in Indo-European roots.] sol'u·ble·ness n., sol'u·bly adv.
1373, "capable of being dissolved," from M.Fr. soluble, from L.L. solubilis "that may be loosened or dissolved," from stem of L. solvere "loosen, dissolve" (see solve). Meaning "capable of being solved" is attested from 1705.
Main Entry: sol·u·ble Pronunciation: 'säl-y&-b&l Function: adjective 1: susceptible of being dissolved in or as if in afluid 2: capable of being emulsified soluble oil>