# masslessness

> English word · Noun · IPA /ˈmæs.lɪs.nɪs/

## Definitions
1. Absence of mass; the state or condition of being massless.

## Etymology
From massless + -ness.

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