Radioactive constant
radioactive constant n.
See decay constant.
Read Also:
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noun, Physics. 1. (def 8). noun 1. disintegration of a nucleus that occurs spontaneously or as a result of electron capture. One or more different nuclei are formed and usually particles and gamma rays are emitted Sometimes shortened to decay Also called disintegration radioactive decay (rā’dē-ō-āk’tĭv) The spontaneous transformation of an unstable atomic nucleus into […]
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noun, Biology. 1. a basic body plan in which the organism can be divided into similar halves by passing a plane at any angle along a central axis, characteristic of sessile and bottom-dwelling animals, as the sea anemone and starfish. noun 1. a type of structure of an organism or part of an organism in […]
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radioactive isotope n. An isotope having an unstable nucleus that decomposes spontaneously by emission of a nuclear electron or helium nucleus and radiation, thus achieving a stable nuclear composition.
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noun, Physics, Chemistry. 1. a succession of elements initiated in the radioactive decay of a parent, as thorium or uranium, each of which decays into the next until a stable element, usually lead, is produced. noun 1. (physics) a series of nuclides each of which undergoes radioactive decay into the next member of the series, […]