chemical

1 of 2

adjective

chem·​i·​cal ˈke-mi-kəl How to pronounce chemical (audio)
1
: of, relating to, used in, or produced by chemistry or the phenomena of chemistry
chemical reactions
2
a
: acting or operated or produced by chemicals
a chemical fire extinguisher
b
: detectable by chemical means
chemically adverb

chemical

2 of 2

noun

1
: a substance obtained by a chemical process or producing a chemical effect
2

Examples of chemical in a Sentence

Adjective They studied the compound's chemical structure.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
My advice to farmers is to learn more about why minimizing chemical use in our foods can promote public health. Tom Gauthier, Forbes.com, 22 May 2025 The rover found chemical signatures and structures that are consistent with the activity of ancient microbial life. Mike Wall, Space.com, 21 May 2025
Noun
While the state's previous protocol included pages of detailed instructions on procurement, storage, testing and transfer for the chemicals, the new protocol has just one page outlining details for pentobarbital. Fernando Cervantes Jr, USA Today, 23 May 2025 Pesticides are named as a potential risk to be studied alongside a list that includes PFAS, microplastics, fluoride, electromagnetic radiation and chemicals used to make plastics. Alexander Tin, CBS News, 22 May 2025 See All Example Sentences for chemical

Word History

Etymology

Adjective

chemic or its source, Medieval Latin chimicus + -al entry 1

Noun

derivative of chemical entry 1

First Known Use

Adjective

1576, in the meaning defined at sense 1

Noun

1739, in the meaning defined at sense 1

Time Traveler
The first known use of chemical was in 1576

Browse Nearby Words

Cite this Entry

“Chemical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chemical. Accessed 29 May. 2025.

Kids Definition

chemical

1 of 2 adjective
chem·​i·​cal ˈkem-i-kəl How to pronounce chemical (audio)
1
: of, relating to, used in, or produced by chemistry
2
: acting or operated or produced by chemicals
chemically adverb

chemical

2 of 2 noun
: a substance (as an element or compound) obtained from a chemical process or used to get a chemical result

Medical Definition

chemical

1 of 2 adjective
chem·​i·​cal ˈkem-i-kəl How to pronounce chemical (audio)
1
: of, relating to, used in, or produced by chemistry
2
a
: acting or operated or produced by chemicals
b
: detectable by chemical means
chemically adverb

chemical

2 of 2 noun
1
: a substance (as an element or chemical compound) obtained by a chemical process or used for producing a chemical effect
2

More from Merriam-Webster on chemical

Last Updated: - Updated example sentences
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