Ionizing Radiation:Radiation with enough energy to remove tightly bound electrons from atoms, thus creating ions.
Thermoluminescent Dosimeter (TLD): A type of dosimeter that measures ionizing radiation exposure by measuring the intensity of visible light emitted from a crystal in the detector when heated.
Acute Radiation Syndrome (ARS): (Also known as radiation sickness) A serious illness that occurs when the entire body (or most of it) receives a high dose of radiation, usually over a short period.