Definition of "radioiodine" [radioiodine]

• A radioactive isotope of iodine widely used as a tracer in medical diagnosis. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The amounts of radioiodine are "very low concentrations" and should have "no impact on state drinking water supplies," the Department of Public Health said in a statement."
• "Regarding the nuclear plants, Spiegel Online is showing a simulation of radioactive drift of I-131 (radioiodine) from the Viennese Central Institute for Meteorology and Geodynamics (ZAMG)."
• "The levels of radioiodine that's been measured in Washington state are extremely low."