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

There were also chemical fires reported at the Conyers site in 2004, 2016, and two in 2020, according to the lawsuit. — Irene Wright, USA Today, 23 June 2026

With fiber-to-fiber recycling, technology has officially moved from pilot to industrial scale, with chemical recycling processes now breaking down complex blends into high-quality raw materials. — Arthur Zaczkiewicz, Footwear News, 22 June 2026

Noun

With this view, astronomers were able to calculate some of the ratios of the chemicals present in the comet. — Chelsea Gohd, Space.com, 24 June 2026

The berries from Arilje are grown without chemicals and picked by hand for high quality. — ABC News, 24 June 2026

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