noun, often attributive
iso·​pro·​pyl | \ ˌī-sə-ˈprō-pəl How to pronounce isopropyl (audio) \

Definition of isopropyl

: the alkyl radical isomeric with straight-chain propyl often used in combination

Examples of isopropyl in a Sentence

Recent Examples on the Web Last year, the company was hit with a federal class action lawsuit after customers claimed that the company failed to disclose the side effects of the ingredient isopropyl cloprostenate, a derivative of bimatoprost. Katie Bourque, Good Housekeeping, "Here's How to Grow Eyelashes so They Look Long and Full Without Makeup," 4 Nov. 2019 Before their recent practice session, Mr. Flores wiped down the lackluster table with isopropyl, and the two taped up their middle and index fingers. Allie Conti, New York Times, "The Lonely Pursuit of Air Hockey Greatness," 19 July 2019 Granite counter cleaner: Mix 2 cups water, 1/4 cup isopropyl alchohol, 5 drops essential oil, a few drops of dish washing liquid or castile soap in a spray bottle. Doreen Christensen,, "Spring cleaning: Recipes for green cleaning products that cost pennies to make," 19 Mar. 2018 The simple recipe: 1/3 cup water 2/3 cup isopropyl or rubbing alcohol Pour the mixture into the spray bottle, spritz and be gone. NBC News, "Defrost a windshield in seconds, clean your car's underbelly, defrost locks and more.," 4 Jan. 2018 Regulators asked manufacturers to provide scientific data for three active ingredients commonly included, ethanol or ethyl alcohol, isopropyl alcohol and benzalkonium chloride, but allowed the products to remain on store shelves. Ariana Eunjung Cha,, "200 scientists call for new restrictions on antimicrobial chemicals in personal-care products," 20 June 2017 That means that good old isopropyl alcohol, and products that contain it, like hand sanitizer or Lysol, are out. Jolie Kerr, Esquire, "Your Smartwatch Is (Probably) Gross. Here's How to Fix That.," 9 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'isopropyl.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of isopropyl

1866, in the meaning defined above

History and Etymology for isopropyl

International Scientific Vocabulary

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Time Traveler for isopropyl

Time Traveler

The first known use of isopropyl was in 1866

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Statistics for isopropyl

Last Updated

22 Nov 2019

Cite this Entry

“Isopropyl.” The Dictionary, Merriam-Webster Inc., Accessed 12 December 2019.

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More Definitions for isopropyl


iso·​pro·​pyl | \ ˌī-sə-ˈprō-pəl How to pronounce isopropyl (audio) \

Medical Definition of isopropyl

: the alkyl group isomeric with normal propyl

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