From Longman Dictionary of Contemporary Englishwater-solubleˈwater-ˌsoluble adjective HCLIQUIDa water-soluble substance is solid but becomes liquid when mixed with water
Examples from the Corpus
water-soluble• More than 50% of oat bran fibre is water-soluble compared to eight percent of what bran fibre.• When watercolour is combined with gouache, or with the new water-soluble drawing media, the results can be quite striking.• Banks says that the use of water-soluble lubricants offers some relief for the problem of vaginal dryness.• Vitamins: Both fat and water-soluble vitamins are essential to fish health.• The water-soluble vitamins, B and C are particularly at risk and levels can fall even further if food is kept hot. 