# atomic weight

> English word · Noun

## Definitions
1. Former term for the more specific relative atomic mass.
2. A term used to represent the mean relative atomic mass of an element in nature, as distinct from the relative atomic mass of a single isotope.

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