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Definitions of insoluble
  1. adjective
    (of a substance) incapable of being dissolved
    Opposite:
  2. adjective
    admitting of no solution or explanation
    "an insoluble doubt"
    Opposite:
  3. adjective
    without hope of solution
    "an insoluble problem"

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Definition that contains insoluble
  • melanin insoluble pigments that account for the color of e.g. skin and scales and feathers
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