chem·i·cal
ˈke-mi-kəl 
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
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
Mack Degeurin, Popular Science, 19 Mar. 2025
Coffee-curious This latest work focuses less on the chemical changes that occur during the brewing process and more on the mechanical and physical processes.
—Ars Technica, 17 Mar. 2025
Joseph V Micallef, Forbes, 22 Mar. 2025
Potential toxins: Research indicates that many protein supplements contain low to significant quantities of toxins, heavy metals, pesticides, and other chemicals linked to cancer and other health problems.
—Anna Giorgi, Verywell Health, 21 Mar. 2025
See All Example Sentences for chemical
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Adjective
Its purpose is to detect hydrogen peroxide, a chemical plants release when exposed to environmental stress.
—Mack Degeurin, Popular Science, 19 Mar. 2025
Coffee-curious This latest work focuses less on the chemical changes that occur during the brewing process and more on the mechanical and physical processes.
—Ars Technica, 17 Mar. 2025
Noun
Each impart different characteristics due to their distinct wood grain and chemical compositions.
—Joseph V Micallef, Forbes, 22 Mar. 2025
Potential toxins: Research indicates that many protein supplements contain low to significant quantities of toxins, heavy metals, pesticides, and other chemicals linked to cancer and other health problems.
—Anna Giorgi, Verywell Health, 21 Mar. 2025
See All Example Sentences for chemical
Cite this Entry
“Chemical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chemical. Accessed 28 Mar. 2025.
Copy CitationKids Definition
chemical
1 of 2 adjective
chem·i·cal
ˈkem-i-kəl
1
: of, relating to, used in, or produced by chemistry
2
: acting or operated or produced by chemicals
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
1
: of, relating to, used in, or produced by chemistry
2
a
: acting or operated or produced by chemicals
b
: detectable by chemical means
chemical
2 of 2 noun1
: a substance (as an element or chemical compound) obtained by a chemical process or used for producing a chemical effect
2
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