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ultrapure

American  
[uhl-truh-pyoor] / ˌʌl trəˈpyʊər /

adjective

  1. extremely pure, especially without impurities.

    ultrapure silicon for semiconductors.


Other Word Forms

  • ultrapurely adverb
  • ultrapurity noun

Etymology

Origin of ultrapure

First recorded in 1960–65; ultra- + pure

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The plants were supplied with a nutrient solution made of ultrapure water, salts, nutrients, and one of the medications for as long as 45 days.

From Science Daily • Mar. 15, 2026

Advanced chip-fabrication plants — fabs, in industry shorthand — can’t run without ultrapure water.

From MarketWatch • Dec. 9, 2025

The process to make solar wafers starts with polysilicon, an ultrapure substance made from quartzite.

From Barron's • Nov. 7, 2025

That works to the advantage of Desert Monks, which has capitalized on its access to large quantities of ultrapure water.

From New York Times • Jul. 22, 2023

Hyper-K will consist of a subterranean cylindrical tank 70 meters tall and filled with 260,000 tons of ultrapure water.

From Science Magazine • Mar. 28, 2022