Anhydrous

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Having little or no water.
  2. 2
    Having no water of crystallization. physical

    "Volatiles of kecap manis and its raw materials were extracted using Likens-Nickerson apparatus with diethyl ether as the extraction solvent. The extracts were then dried with anhydrous sodium sulfate, concentrated using a rotary evaporator followed by flushing using nitrogen until the volume was about 0.5 ml."

Adjective
  1. 1
    without water; especially without water of crystallization wordnet

Synonyms

All synonyms
aridathirstbone-drydesertdrieddried

Example

More examples

"Ran stored the anhydrous compound in a sealed container to prevent moisture absorption."

Etymology

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

Related phrases

water of crystallization

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.