# rutherford

> English word · Noun · frequency rank #17,946

## Definitions
1. An obsolete unit of radioactivity (symbol: rd), defined as the activity of a quantity of radioactive material in which one million nuclei decay per second.

## Etymology
After Ernest Rutherford.

## Common misspellings (16)
`rrutherford`, `rtuherford`, `ruhterford`, `rutehrford`, `ruthefrord`, `rutherfford`, `rutherfodr`, `rutherfordd`, `rutherforrd`, `rutherfrod`, `rutherofrd`, `rutherrford`, `ruthherford`, `ruthreford`, `ruttherford`, `urtherford`

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