: a crystalline ester C5H8N4O12 used as a powerful high explosive and medically in the treatment of angina pectoris
… the experts determined that its explosive content was identical to that of the Honolulu bomb—PETN, an explosive undetectable by X-ray.Steven Emerson

called also pentaerythritol tetranitrate

Examples of PETN in a Sentence

Recent Examples on the Web
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The batteries of the walkie-talkies were laced with a highly explosive compound known as PETN, a Lebanese source familiar with the device’s components told Reuters. Reuters Staff, The Christian Science Monitor, 20 Sep. 2024

Word History

Etymology

pentaerythritol tetranitrate

First Known Use

1944, in the meaning defined above

Time Traveler
The first known use of PETN was in 1944

Dictionary Entries Near PETN

Cite this Entry

“PETN.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/PETN. Accessed 22 Nov. 2024.

Last Updated: - Updated example sentences
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