Translation guide
A radioactive isotope, used in medicine, industry, and research. The standard Japanese term is 放射性同位体, often abbreviated as ラジオアイソトープ in technical contexts.
The scientific concept of an isotope that emits radiation.
The standard, formal term used in scientific and technical writing. Literally 'radioactive isotope'.
放射性同位体は医療や工業で利用されている。
Radioisotopes are used in medicine and industry.
Abbreviation used in very technical contexts, especially in written form or among specialists.
RI施設には厳しい安全基準がある。
RI facilities have strict safety standards.
Common abbreviation used in technical and medical fields. Often used in compounds.
ラジオアイソトープ検査を受けた。
I had a radioisotope scan.