polyphosphate

/ˌpɑliˈfɑsfeɪt/
noun
  1. A chemical compound made of many phosphate groups linked together, often used in detergents, fertilizers, and food processing.
    • Polyphosphate is added to some laundry detergents to help soften water and remove stains.
    • Scientists study polyphosphate in bacteria to understand how cells store energy.
    • The food industry uses polyphosphate as a preservative to keep meat fresh longer.