phenol

noun

phe·​nol ˈfē-ˌnōl How to pronounce phenol (audio)
-ˌnȯl;
fi-ˈnōl
-ˈnȯl How to pronounce phenol (audio)
1
: a corrosive poisonous crystalline acidic compound C6H5OH present in the tars of coal and wood that in dilute solution is used as a disinfectant
2
: any of various acidic compounds analogous to phenol and regarded as hydroxyl derivatives of aromatic hydrocarbons

Examples of phenol in a Sentence

Recent Examples on the Web
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Three out of the four species can break down phenol, an antifungal compound that conservators used to treat the mummy in 1991. ArsTechnica, 6 June 2026 Scientists found that some yeast species capable of breaking down phenol, a chemical used to disinfect the mummy after its discovery, have increased over time despite the freezing temperatures. Anthony Thompson, USA Today, 4 June 2026 Species that were able to digest phenol, a chemical used to disinfect the Iceman, have grown—despite the below-freezing temperatures that Ötzi is kept in. Adam Kovac, Scientific American, 3 June 2026 The antioxidants in dandelion greens, such as phenols, have been shown to reduce total cholesterol and triglyceride levels. Cory Martin, Verywell Health, 9 Feb. 2026 See All Example Sentences for phenol

Word History

Etymology

International Scientific Vocabulary phen- + -ol entry 3

First Known Use

1849, in the meaning defined at sense 1

Time Traveler
The first known use of phenol was in 1849

Browse Nearby Words

Cite this Entry

“Phenol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phenol. Accessed 13 Jun. 2026.

Kids Definition

phenol

noun
phe·​nol ˈfē-ˌnōl How to pronounce phenol (audio) -ˌnȯl How to pronounce phenol (audio)
fi-ˈnōl
-ˈnȯl
: a white poisonous acidic compound present in tars from coal and wood that when dissolved to make a weak liquid mixture is used as a disinfectant
phenolic
fi-ˈnō-lik
-ˈnäl-ik
adjective

Medical Definition

phenol

noun
phe·​nol ˈfē-ˌnōl How to pronounce phenol (audio) -ˌnȯl How to pronounce phenol (audio)
fi-ˈ
1
: a corrosive poisonous crystalline acidic compound C6H5OH present in coal tar and wood tar that is used in the manufacture of resins and plastics, dyes, and pharmaceuticals (as aspirin) and as a topical anesthetic in dilute solution

called also carbolic, carbolic acid, hydroxybenzene

2
: any of various acidic compounds analogous to phenol and regarded as hydroxyl derivatives of aromatic hydrocarbons

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