pen·​e·​trant | \ ˈpe-nə-trənt How to pronounce penetrant (audio) \

Definition of penetrant

 (Entry 1 of 2)

2 of a gene : producing a phenotypic effect : exhibiting penetrance



Definition of penetrant (Entry 2 of 2)

: one that penetrates or is capable of penetrating

Examples of penetrant in a Sentence

Recent Examples on the Web: Adjective Through working with master jewelers to realize her penetrant vision, Lipton has created something that embodies much more than a fine jewelry collection. Kyle Roderick, Forbes, 7 Apr. 2021 Recent Examples on the Web: Noun That created a pseudo-virus that would mimic 2019-nCoV’s cell-penetrant biology but leave out its ability to replicate and cause illness. Damian Garde, STAT, 5 Feb. 2020 Don’t Forget the Penetrant Always use a penetrant when backing out damaged screws in metal. Roy Berendsohn, Popular Mechanics, 8 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'penetrant.' 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 penetrant


1543, in the meaning defined at sense 1


circa 1734, in the meaning defined above

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The first known use of penetrant was in 1543

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Cite this Entry

“Penetrant.” Dictionary, Merriam-Webster, Accessed 24 Jul. 2021.

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