waste material

• Toute substance ou matériau qui est jeté, devenu inutile ou plus apte à l'usage après un processus ou une activité, nécessitant souvent une élimination ou un recyclage.

Any substance or material that is discarded, unwanted, or no longer useful after a process or activity, often requiring disposal or recycling.

1. Unwanted or unusable substancesB1formal

   Any material that is discarded after its primary use, or is considered worthless, defective, or of no use.

   déchet

   • The factory disposes of its waste material in a special treatment plant.
   • Recycling programs help reduce the amount of waste material in landfills.
   • Hazardous waste material must be handled with extreme care.

2. Byproduct of a processB2formal

   Material that is left over from a manufacturing or biological process and has no further value in that context.

   déchet de production

   • The chemical reaction produced a toxic waste material.
   • Sawdust is a common waste material in woodworking.
   • The body eliminates waste material through the digestive system.