- a radioactive isotope of phosphorus, used as a chemotherapeutic agent.
Also called radiophosphorus.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- A radioactive beta-emitting isotope of phosphorus having a half-life of 14.3 days and used as a tracer in studies of the metabolism of nucleic acids and phospholipids, and also used in the treatment of certain diseases of the osseous and hematopoietic systems.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.