Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
iodine-131 is a noun meaning "heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter". It carries one recorded sense.
heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter
Definitions, synonyms and semantic relations for iodine-131 come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .