phenol

American  

[fee-nawl, -nol] / ˈfi nɔl, -nɒl /

noun

Chemistry.

1. Also called hydroxybenzene, oxybenzene, phenylic acid.  Also called carbolic acid,.  a white, crystalline, water-soluble, poisonous mass, C 6 H 5 OH, obtained from coal tar, or a hydroxyl derivative of benzene: used chiefly as a disinfectant, as an antiseptic, and in organic synthesis.

2. any analogous hydroxyl derivative of benzene.

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phenol British  

/ ˈfiːnɒl /

noun

1. Also called: carbolic acid.  a white crystalline soluble poisonous acidic derivative of benzene, used as an antiseptic and disinfectant and in the manufacture of resins, nylon, dyes, explosives, and pharmaceuticals; hydroxybenzene. Formula: C 6 H 5 OH

2. chem any of a class of weakly acidic organic compounds whose molecules contain one or more hydroxyl groups bound directly to a carbon atom in an aromatic ring

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phenol Scientific  

/ fē′nôl′,-nōl′ /

1. Any of a class of organic compounds that contain a hydroxyl group (OH) attached to a carbon atom that is part of an aromatic ring. Phenols are similar to alcohols but are more soluble in water, and occur as colorless solids or liquids at room temperature. Some phenols occur naturally in the essential oils of plants. Phenols are used in industry to make plastics and detergents.

2. The simplest phenol, consisting of a benzene ring attached to a hydroxyl group (OH). It is a poisonous, white, crystalline compound and is used to make plastics and drugs. Also called carbolic acid. Chemical formula: C ₆ H ₆ O.

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Other Word Forms

• nonphenolic
  adjective
• phenolic
  adjective

Etymology

Origin of phenol

First recorded in 1850–55; phen(o)- + -ol ¹

Compare meaning

How does phenol compare to similar and commonly confused words? Explore the most common comparisons:

• phenyl vs. phenol

Example Sentences

See Examples For:

phenol

A chemical called phenol was used to stop fungus from growing in the body.

From Barron's ● Jun. 3, 2026

The sector employs well over a million people and provides the ingredients for all the stuff of modern life, from polyethylene packaging to phenol for painkillers.

From The Wall Street Journal ● Jan. 29, 2026

Tests showed total phenol content was reduced by 88%, 92% and 62% with boiling, pressure cooking and natural fermentation, respectively, compared to the raw plant.

From Science Daily ● Feb. 23, 2024

It produces phenol, a toxic chemical precursor, and is often belching noxious fumes into the air.

From Los Angeles Times ● Feb. 22, 2022

The phenol is still sitting there where Engel left it, but I do not think they are going to use it.

From "Code Name Verity" by Elizabeth Wein