What does "radioiodine" mean?

The radioactive isotope of iodine, ¹³¹₅₃I, having a half-life of 8 days; used as a medical tracer

What is a synonym for "radioiodine"?

Common synonyms include: iodine 131, iodine-131, radiator, radioelement, radium, tracer.

noun

noun ·Rare ·Advanced level

Noun

1
The radioactive isotope of iodine, ¹³¹₅₃I, having a half-life of 8 days; used as a medical tracer countable, uncountable
"Thyroid cells, in contrast to other cells, have the capability to organify iodine, which increases the time radioiodine can deposit energy."

"Thyroid cells, in contrast to other cells, have the capability to organify iodine, which increases the time radioiodine can deposit energy."

From radio- + iodine.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.