radioactive material

• Matière contenant des noyaux atomiques instables qui se désintègrent en émettant un rayonnement ionisant sous forme de particules ou d'ondes électromagnétiques.

A substance that contains unstable atomic nuclei, which decay and emit ionizing radiation in the form of particles or electromagnetic waves.

1. Substance emitting radiationB2formal

   A material that contains unstable atomic nuclei that spontaneously decay, emitting ionizing radiation in the form of particles or energy.

   matière radioactive

   • Uranium is a naturally occurring radioactive material used in nuclear power plants.
   • Workers must wear protective gear when handling radioactive material.
   • The disposal of radioactive material requires strict safety protocols.

2. Medical isotopeB2formal

   A radioactive substance used in medical diagnostics or treatments, such as cancer therapy.

   isotope radioactif médical

   • The hospital uses radioactive material for imaging scans.
   • Radioactive material is carefully administered to patients for targeted therapy.
   • Technetium-99m is a common radioactive material in nuclear medicine.