# radioisotope

> English word · Noun · frequency rank #75,332

## Definitions
1. A radioactive isotope of an element.

## Etymology
From radio- + isotope.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/radioisotope