waste product

• Tout matériau rejeté comme inutile ou sans valeur après un processus de production, un métabolisme biologique ou une autre activité ; souvent un sous-produit dont on ne peut plus faire usage.

Any material that is discarded as unwanted or unusable after a manufacturing process, biological metabolism, or other activity; often refers to byproducts that have no further use.

1. Unwanted material from a processB2formal

   A substance that is produced as a byproduct of a manufacturing, biological, or chemical process and is discarded as useless or harmful.

   déchet de production

   • The factory treats its waste products before releasing them into the river.
   • Carbon dioxide is a waste product of cellular respiration.
   • Proper disposal of waste products is essential for environmental protection.

2. Metabolic byproductB2formal

   A substance produced by the body's metabolic processes that is not needed and must be eliminated.

   déchet métabolique

   • Urea is a waste product excreted by the kidneys.
   • The liver filters waste products from the blood.
   • Lactic acid is a waste product that builds up in muscles during intense exercise.