chemical

adjective
chem·i·cal | \ˈke-mi-kəl \

Definition of chemical 

(Entry 1 of 2)

1 : of, relating to, used in, or produced by chemistry or the phenomena of chemistry chemical reactions

2a : acting or operated or produced by chemicals a chemical fire extinguisher

b : detectable by chemical means

chemical

noun

Definition of chemical (Entry 2 of 2)

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

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Other Words from chemical

Adjective

chemically \-mi-k(ə-)lē \ adverb

Examples of chemical in a Sentence

Adjective

They studied the compound's chemical structure.

Recent Examples on the Web: Adjective

The chemical reaction combined with a broken ventilation system and created a noxious cloud that employees then inhaled. Rachel Becker, The Verge, "There might be poop in the water you’re swimming in so please don’t swallow it, CDC says," 29 June 2018 Such molecules are not always associated with biology and can form from chemical reactions in deep space, but asteroids could have seeded Earth with the organic matter that led to life. Kenneth Chang, New York Times, "Japan’s Hayabusa2 Spacecraft Creeps Up on the Ryugu Asteroid," 25 June 2018 There’s something instructive about the chemical reaction that turns a fashion statement into a plain old statement and then into, against all odds, a scandal. Megan Garber, The Atlantic, "Schrödinger’s Coat," 22 June 2018 That kind of product causes a chemical reaction with your hair. Kristi Kellogg, Teen Vogue, "How To Lighten Hair Naturally: 7 Tips for Lighter Hair," 19 June 2018 The condition more commonly strikes women by upsetting the balance of chemical reactions in the body, causing health problems including obesity, joint pain and heart disease. Gil Kaufman, Billboard, "What We Know About Kelly Clarkson's Thyroid Issue," 8 June 2018 Create a chemical reaction to make the rocket fly, discuss how real rockets are launched, then try for the highest launch or the longest time in the air. Chronicle Staff Report, San Francisco Chronicle, "Kids listings," 7 June 2018 The team designed a different geometry for the parts the water trickles through in order to maximize the chemical reaction, but otherwise this machine is essentially stock. Scott K. Johnson, Ars Technica, "Machines that suck CO₂ from the air might be cheaper than we thought," 7 June 2018 The eruption of Kilauea sparked safety warnings about toxic gas on the Big Island’s southern coastline, after lava began flowing into the ocean and setting off a chemical reaction. Barnini Chakraborty, Fox News, "Hawaii volcano creating blue flames from methane in cracked roads," 23 May 2018

Recent Examples on the Web: Noun

The active ingredient in Epidiolex, an epilepsy medication, is cannabidiol (CBD), one of the two main chemical compounds found in marijuana. Renae Reints, Fortune, "The FDA May Approve Its First Cannabis-Based Drug This Week," 25 June 2018 Its active ingredient is cannabidiol, or CBD, one of the chemical compounds found in the cannabis plant. New York Times, "Court to Rule on Mandatory Union Fees, and U.S. May Restrict Chinese Investment," 24 June 2018 Many of them perform helpful functions such as controlling rodents, slugs, centipedes and leeches, or providing chemical compounds used in cancer and heart disease treatments. Shelia Poole, ajc, "7 most common myths about snakes," 5 June 2018 Hexagon then predicts which strings of DNA, or gene clusters, are most likely to produce specific types of chemical compounds. Peter Andrey Smith, Bloomberg.com, "This Fungus Could Help Cure Cancer," 4 June 2018 The Oregon plant produces the chemical compound urea, among other things, as fertilizer for the agricultural industry. Maxine Bernstein, OregonLive.com, "Manufacturing plant near St. Helens that emitted tons of hazardous ammonia to pay $250,000 fine," 4 June 2018 Cleaning chemicals and lighter fluid stored next to cutting boards and above food in storage. Robert Gundran, azcentral, "Restaurant with no sneeze guard on salsa bar among this week's violations," 11 July 2018 But much of the region’s water is still laden with chemicals, and remediation efforts have been spotty. Leslie Nemo, Scientific American, "From Defiled to Wild—Can a Spent Coal Mine Be Reborn as a Nature Conservation Center?," 11 July 2018 The salmon itself poses a threat to the whales, as chemicals and pesticides accumulate as the fish feed and eventually end up stored in the orcas’ fat. Meilan Solly, Smithsonian, "Pacific Northwest Orca Population Hits 30-Year-Low," 10 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'chemical.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of chemical

Adjective

1576, in the meaning defined at sense 1

Noun

1739, in the meaning defined at sense 1

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Phrases Related to chemical

chemical reaction

chemically dependent

Statistics for chemical

Last Updated

5 Oct 2018

Look-up Popularity

Time Traveler for chemical

The first known use of chemical was in 1576

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More Definitions for chemical

chemical

adjective

English Language Learners Definition of chemical

 (Entry 1 of 2)

: of or relating to chemistry

: working by means of chemicals

chemical

noun

English Language Learners Definition of chemical (Entry 2 of 2)

: a substance (such as an element or compound) that is made by a chemical process

chemical

adjective
chem·i·cal | \ˈke-mi-kəl \

Kids Definition of chemical

 (Entry 1 of 2)

: of or relating to chemistry or chemicals

Other Words from chemical

chemically adverb

chemical

noun

Kids Definition of chemical (Entry 2 of 2)

: any substance (as an acid) that is formed when two or more other substances act upon one another or that is used to produce a change in another substance

chemical

adjective
chem·i·cal | \ˈkem-i-kəl \

Medical Definition of chemical 

(Entry 1 of 2)

1 : of, relating to, used in, or produced by chemistry

2a : acting or operated or produced by chemicals

b : detectable by chemical means

Other Words from chemical

chemically \-i-k(ə-)lē \ adverb

chemical

noun

Medical Definition of chemical (Entry 2 of 2)

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

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More from Merriam-Webster on chemical

Spanish Central: Translation of chemical

Nglish: Translation of chemical for Spanish Speakers

Britannica English: Translation of chemical for Arabic Speakers

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