1
a
: the process of purifying a liquid by successive evaporation and condensation
b
: a process like distillation
gradual distillation of the truth
also : an instance of such distilling
2

Examples of distillation in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Just as a still concentrates a large batch of weak liquid into a smaller batch of strong stuff, AI distillation condenses a big model into a smaller one that, ideally, acts like the original. — Peter Hall, Scientific American, 7 Oct. 2026 Reverse osmosis and distillation can produce suitable water, but desalination adds equipment and increases electricity demand. — Sujita Sinha, Interesting Engineering, 5 Oct. 2026 As early as the 19th century, vintners began experimenting with dealcoholized wine using a process known as vacuum distillation. — Erik Kirschbaum, Los Angeles Times, 3 Oct. 2026 OpenAI accuses top Chinese lab of distilling models OpenAI on Wednesday accused Moonshot of wide-scale distillation to improve its own models, as competition intensifies between Washington and Beijing to build the most advanced tech. — Brendan Ruberry, semafor.com, 1 Oct. 2026 See All Example Sentences for distillation

Word History

First Known Use

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of distillation was in the 14th century

Browse Nearby Words

Cite this Entry

“Distillation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/distillation. Accessed 9 Oct. 2026.

Kids Definition

distillation

noun
: a process of heating a liquid or solid until it sends off a vapor and then cooling the vapor until it becomes liquid

Medical Definition

distillation

noun
1
: a process that consists of driving gas or vapor from liquids or solids by heating and condensing to liquid products and that is used especially for purification, fractionation, or the formation of new substances
2
: something distilled

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