# grammage

> English word · Noun

## Definitions
1. The mass per area of paper measured in grams per square meter (g/m²).
2. The integral of matter density along the path (of a cosmic ray).

## Etymology
From gram + -age.

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