greaseproof

/ˈɡriːsˌpruːf/
adjective
  1. Resistant to grease or oil; not allowing grease to pass through.
    • For crispy fries, line the basket with greaseproof paper to absorb excess oil.
    • The baker wrapped the pastries in greaseproof paper to keep them fresh.
    • These greaseproof gloves protect your hands when handling oily machinery.
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