# becquerel

> English word · Noun · IPA [bɛkəˈɹɛɫ]

## Definitions
1. In the International System of Units, the derived unit of radioactive activity; the activity of a quantity of radioactive material in which one nucleus decays per second. Symbol: Bq

## Etymology
Borrowed from French becquerel. Named after the French physicist Henri Becquerel.

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