ultrapure

[ uhl-truh-pyoo r ]
/ ˌʌl trəˈpyʊər /

adjective

extremely pure, especially without impurities: ultrapure silicon for semiconductors.

Origin of ultrapure

First recorded in 1960–65; ultra- + pure

Related forms

ul·tra·pure·ly, adverbul·tra·pu·ri·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019