water insoluble

/ˈwɔtər ɪnˈsɑljəbəl/
adjective
  1. Unable to dissolve in water.
    • The paint is water-insoluble, so you need a special solvent to clean the brushes.
    • Some vitamins are water-insoluble and must be taken with fatty foods.
    • Oil is water-insoluble, which is why it floats on top of water.
Synonyms
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