# anhydrous

> English word · Adjective · frequency rank #58,504

## Definitions
1. Having little or no water.
2. Having no water of crystallization.

## Etymology
From an- + Ancient Greek ὕδωρ (húdōr, “water”) + -ous.

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