Lexic.us

Definition of Radioactivity

1. Noun. The spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay.

Definition of Radioactivity

1. Noun. Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus. ¹

2. Noun. The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc. ¹

¹ Source: wiktionary.com

Definition of Radioactivity

1. [n -TIES]

Medical Definition of Radioactivity

1. The quality of emitting or the emission of corpuscular or electromagnetic radiations consequent to nuclear disintegration, a natural property of all chemical elements of atomic number above 83 and possible of induction in all other known elements. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Radioactivity

Literary usage of Radioactivity

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Journal of Geology by University of Chicago Department of Geology and Paleontology (1906)
"THE RELATION OF radioactivity TO VULCANISM GEORGE DAVIS LOUDERBACK University of California Within the last year or two those working in the rapidly growing ..."

2. Physics of Plutonium Recycling: A Report by SourceOECD (Online service) (1995)
"The radioactivity (in Curies) as a function of time for each TRU isotope, for both fresh-fuel (feed) and discharged-fuel (3-burn cycle), are shown in Tables ..."

3. Smithsonian Physical Tables by Smithsonian Institution, Frederick Eugene Fowle (1916)
"radioactivity is a property of certain elements of high atomic weight. ... International radium standard: As many radioactivity measures depend upon the ..."

4. Transactions of the American Institute of Electrical Engineers by American Institute of Electrical Engineers (1913)
"One often hears the opinion expressed that the discoveries in radioactivity have completely overthrown many of the theories that we had come to look upon as ..."

5. The Cumulative Book Index by H.W. Wilson Company (1909)
"J: C. radioactivity of lead. 2uc. '08. University of Toronto library, Toronto. Can. ... VE On the radioactivity of lead and other metals, pa, 25c. '07. ..."

6. Proceedings and Transactions of the Royal Society of Canada: Déliberations by Royal Society of Canada (1908)
"On the radioactivity of Potassium and other Alkali Metals. ... In the course of some experiments made by them on the radioactivity of a series of salts ..."

7. The Chemical Effects of Alpha Particles and Electrons by Samuel Colville Lind (1921)
"Brief Outline of radioactivity and Some Properties of the Radiations. 4. Nature of radioactivity—Rutherford-Soddy Hypothesis. While it lies outside the ..."

8. Memoirs of the New York Botanical Garden by New York Botanical Garden (1908)
"CHAPTER II radioactivity A FACTOR OF PLANT ENVIRONMENT Previous to the ... The discovery of radioactivity and other revelations closely related to it, ..."

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