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radon-219. See: emanon.
Farlex Partner Medical Dictionary © Farlex 2012
actinium emanationA radioisotope associated with actinium identified in 1904, which has a half-life of 3.96 seconds and correspond to 219Rn.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
The radioactive gas given off by actinium; a radioactive isotope of actinium. Synonym: actinon
See also: emanation
Medical Dictionary, © 2009 Farlex and Partners