Related Words

Decay: The time of reduction of the level of a signal immediately after its cessation .

Radioactive Decay: The spontaneous decay of an atom to an atom of a different element by emission of a particle from its nucleus (alpha and beta decay) or by electron capture.

Beta Decay: Type of radioactive decay in which a radioisotope emits a small, negatively-charged and fast-moving particle from its nucleus. The beta particle is similar in size, charge, and speed to an e . . . View Full Definition

Decay Series: Most radioisotopes do not decay into a stable daughter element in one single decay, but rather through a series of radioactive intermediaries.

Alpha Decay: Type of radioactive decay in which a radioisotope emits a large but slow-moving particle consisting of two protons and two neutrons.

Miasma Theory: The theory that diseases were caused by miasma or bad air arising from organic decay, filth, or other conditions of the local environment.

Persistence: A measure of the time of decay of the luminescence of the face of the cathode-ray tube after excitation by the stream of electrons has ceased. Relatively slow decay is indicative of high per . . . View Full Definition

Caries: The correct technical term for decay which is the progressive breaking down or dissolving of tooth structure, caused by the acid produced when bacteria digest sugars.

Bitewing X-Rays: X-rays taken of the crowns of teeth to check for decay.

Amalgam: An alloy that contains mercury.