radioisotope

noun

ra·​dio·​iso·​tope ˌrā-dē-ō-ˈī-sə-ˌtōp 

: a radioactive isotope

radioisotopic

ˌrā-dē-ō-ˌī-sə-ˈtä-pik 

-ˈtō-

adjective

radioisotopically

ˌrā-dē-ō-ˌī-sə-ˈtä-pi-k(ə-)lē 

adverb

Examples of radioisotope in a Sentence

Recent Examples on the Web

But radioisotopes decay more slowly in the Polesian marshes than elsewhere; the marshes’ mix of marshy, sandy, and clay soils provides almost perfect conditions for radioactive fallout to pass from the soil into plants. —Franziska Exeler, The Dial, 18 Feb. 2025

At that point, NRG will stop producing medical radioisotopes at its older Petten reactor. —Chris Baraniuk, WIRED, 27 Nov. 2024

With delays in the radioisotope expected well into November, this means that over 1 million diagnostic exams may have to be delayed, cancelled or rescheduled due to the shortage. —Omer Awan, Forbes, 24 Oct. 2024

Radioisotope gastric-emptying scan: This test involves eating food containing a radioisotope (a slightly radioactive substance) that shows up on a scan. —Anna Giorgi, Verywell Health, 15 Oct. 2024

Word History

Etymology

International Scientific Vocabulary

First Known Use

1938, in the meaning defined above

Rhymes for radioisotope

• antelope
• bronchoscope
• cantaloupe
• cystoscope
• endoscope
• envelope
• epitope
• gyroscope
• horoscope
• isotope
• microscope
• misanthrope

Kids Definition

radioisotope

noun

ra·​dio·​iso·​tope ˌrād-ē-ō-ˈī-sə-ˌtōp 

: a radioactive isotope

Medical Definition

radioisotope

noun

ra·​dio·​iso·​tope ˌrād-ē-ō-ˈī-sə-ˌtōp 

: a radioactive isotope compare radioelement

radioisotopic

-ˌī-sə-ˈtäp-ik, -ˈtōp-ik 

adjective

radioisotopically

-i-k(ə-)lē 

adverb