chemical

1 of 2

adjective

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

chemically

ˈke-mi-k(ə-)lē 

adverb

chemical

2 of 2

noun

1

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

2

: drug sense 2

Examples of chemical in a Sentence

Adjective

They studied the compound's chemical structure.

Recent Examples on the Web

Adjective

Those intriguing chemical fingerprints include the iron-containing minerals vivianite and greigite, which Perseverance spotted in the clay-rich sediments of a long-dry lakebed. —Mike Wall, Space.com, 11 Sep. 2025

Their methodology, chemical liquid deposition (CLD), allows precise engineering and rapid testing of various metal-imidazole combinations. —Neetika Walter, Interesting Engineering, 11 Sep. 2025

Noun

The United Kingdom also sanctioned 30 individuals and companies, included businesses based in China and Turkey, that have supplied Russia with electronics, chemicals, explosives and other weapons components. —Arkansas Online, 14 Sep. 2025

Fracking means pumping millions of pounds of sand and millions of gallons of water and chemicals into each well with the necessary pressures to release the oil and gas. —Jordan Blum, Fortune, 14 Sep. 2025

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

Phrases Containing chemical

• chemical castration
• chemical engineering
• chemical laser
• chemical peel
• chemical reaction
• chemical warfare
• chemical weapon
• forever chemical
• multiple chemical sensitivity

Rhymes for chemical

• academical
• agrochemical
• biochemical
• cytochemical
• geochemical
• histochemical
• microchemical
• neurochemical
• petrochemical
• photochemical
• phytochemical
• spectrochemical

Kids 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

chemically

-i-k(ə-)lē 

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 

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

-i-k(ə-)lē 

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

: drug sense 2