water-soluble
adjectiveUK /ˈwɔːtə ˈsɒljʊbl/
US /ˈwɔtər ˈsɑljəbəl/
A water-soluble thing can melt or mix into water.
Sugar is water-soluble, so it disappears when you stir it into a glass of water.
OTHER MEANINGS
2. Able to be dissolved in water, used about substances in chemistry.
The scientist tested whether the powder was water-soluble before adding it to the tank.
3. Able to be washed away or removed by water.
These water-soluble paints are easy to clean off brushes with just tap water.
4. Describing vitamins that dissolve in water and pass through the body quickly.
Vitamin C is water-soluble, so you need some in your food every day.