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chemistry

American  
[kem-uh-stree] / ˈkɛm ə stri /

noun

  • chemistries
    plural
  1. the science that deals with the composition and properties of substances and various elementary forms of matter.

  2. chemical properties, reactions, phenomena, etc..

    the chemistry of carbon.

  3. the interaction of one personality with another.

    The chemistry between him and his boss was all wrong.

  4. sympathetic understanding; rapport.

    the astonishing chemistry between the actors.

  5. any or all of the elements that make up something.

    the chemistry of love.


chemistry British  
/ ˈkɛmɪstrɪ /

noun

  1. the branch of physical science concerned with the composition, properties, and reactions of substances See also inorganic chemistry organic chemistry physical chemistry

  2. the composition, properties, and reactions of a particular substance

  3. the nature and effects of any complex phenomenon

    the chemistry of humour

  4. informal a reaction, taken to be instinctual, between two persons

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

chemistry Scientific  
/ kĕmĭ-strē /
  1. The scientific study of the structure, properties, and reactions of the chemical elements and the compounds they form.

  2. The composition, structure, properties, and reactions of a substance.


chemistry Cultural  
  1. The study of the composition, properties, and reactions of matter, particularly at the level of atoms and molecules.


Other Word Forms

Noun Inflected Forms

Etymology

Origin of chemistry

First recorded in 1590–1600; chemist + -ry; replacing earlier chymistry, chimistry

Explanation

Chemistry is the science that tells us what things and people are made of; for example, that water is really H2O, two atoms of hydrogen and one of oxygen. Chemistry deals with chemicals and elements, the building blocks of our world. The periodic table, that table of all of earth's basic elements — iron, carbon, oxygen, nitrogen, etc. — comes from chemistry. Chemistry explains how atoms attract each other to become molecules. We also use the term to refer to people who are attracted to each other, either as colleagues, friends or romantic partners. Movie reviewers often say that that romantic leads have "great chemistry" — or not.

Keep Reading on Vocabulary.com

Vocabulary lists containing chemistry

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Asked to define the magic of their chemistry, Edwards said it was not instantaneous.

From Los Angeles Times Aug. 4, 2026

Researchers have now identified a way to reproduce part of this potent chemistry in a laboratory setting, creating a possible path toward more sustainable treatments based on natural products.

From Science Daily Aug. 3, 2026

“A lot of new bodies. Fortunately he had spring and all summer with all these guys to start developing that chemistry and that confidence,” Riley said of Maiava.

From Los Angeles Times Aug. 1, 2026

Danny Leigh of the Financial Times awarded the film three stars, external, praising the chemistry between Holland and Zendaya but criticising the film's insistence on falling back on CGI-heavy action sequences.

From BBC Aug. 1, 2026

I taught French and math and directed the choir; Jimmie taught science, chemistry, and biology.

From "Reaching for the Moon" by Katherine Johnson

To compete, we have to move beyond lithium-based batteries to novel chemistries.

From The Wall Street Journal Feb. 16, 2026

There are hundreds of steel chemistries processed dozens of ways to make products suitable for cars, cans, and buildings.

From Barron's Nov. 4, 2025

Meanwhile, battery safety is improving all the time, with newer systems equipped with improved suppression systems and more fire-resistant battery chemistries.

From BBC Sep. 10, 2025

However, they can handle more frequent fast-charging than other battery chemistries.

From Seattle Times May 14, 2024

But compared with cows’ bodies, ours offer different immune defenses, lice, feces, and chemistries.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond

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