# ultrathin

> English word · Adjective · frequency rank #76,422

## Definitions
1. Extremely thin; of utmost thinness.

## Etymology
From ultra- + thin.

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