radioisotopes

IPA/ˌreɪ.di.əʊˈaɪ.sə.təʊp/
IPA/ˌreɪ.di.oʊˈaɪ.sə.toʊp/

radioisotopes — noun

  • radioisotopessingular
  • radioisotopesesplural

1. a type of atom of a chemical element that is unstable and naturally releases ene

1.名詞C1
釋義

a type of atom of a chemical element that is unstable and naturally releases energy as radiation

例句

Doctors used radioisotopes to find the tumour growing in Ada's left lung.

plural form: radioisotopes used in medical imaging

Hari's team tracked the radioisotope as it moved through the soil layer.

同義詞
  • radioactive isotope

    more common in everyday explanations; same meaning but longer

  • radionuclide

    more technical; used mainly in nuclear physics and medical literature

反義詞

用法筆記

Technical term used mainly in chemistry, medicine, and physics. Do not confuse with 'isotope' alone — many isotopes are stable and do not give off radiation.

常見錯誤

❌The scientist studied the isotope to measure radiation.' (when the isotope was non-radioactive).
✅The scientist studied the radioisotope to measure radiation.
💡an ordinary isotope may not emit radiation; only a radioisotope does.