chemistry
noun
chem·is·try
ˈke-mə-strē 
plural chemistries
1
: a science that deals with the composition, structure, and properties of substances and with the transformations that they undergo
2
a
: the composition and chemical properties of a substance
the chemistry of iron
b
: chemical processes and phenomena (as of an organism)
blood chemistry
3
a
: a strong mutual attraction, attachment, or sympathy
they have a special chemistry
b
: interaction between people working together
specifically
: such interaction when harmonious or effective
a team lacking chemistry
Examples of chemistry in a Sentence
studying the chemistry of gasoline
They tried dating, but there was no chemistry between them.
the chemistry of the office
Recent Examples on the Web
Sam An, a pharmacist at a compounding pharmacy until 2021, told me that his workplace employed about twenty people—pharmacists, technicians, cashiers, couriers—in what resembled a chemistry laboratory.
—
Dhruv Khullar, New Yorker, 6 Apr. 2026
While engineering challenges remain—particularly in designing reactors that can withstand corrosive conditions—the chemistry is robust.
—Jijo Malayil, Interesting Engineering, 6 Apr. 2026
Autumn olive outcompetes and displaces native plants by shading them and changing the surrounding soil chemistry—a process called allelopathy.
—Sj McShane, Martha Stewart, 5 Apr. 2026
The Warriors now have four regular-season games remaining for Curry to get the rust off and for the team to regain some chemistry before the play-in.
—Sports Columnist, San Francisco Chronicle, 5 Apr. 2026
See All Example Sentences for chemistry
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Dhruv Khullar, New Yorker, 6 Apr. 2026
While engineering challenges remain—particularly in designing reactors that can withstand corrosive conditions—the chemistry is robust.
—Jijo Malayil, Interesting Engineering, 6 Apr. 2026
Autumn olive outcompetes and displaces native plants by shading them and changing the surrounding soil chemistry—a process called allelopathy.
—Sj McShane, Martha Stewart, 5 Apr. 2026
The Warriors now have four regular-season games remaining for Curry to get the rust off and for the team to regain some chemistry before the play-in.
—Sports Columnist, San Francisco Chronicle, 5 Apr. 2026
See All Example Sentences for chemistry
Cite this Entry
“Chemistry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chemistry. Accessed 8 Apr. 2026.
Copy CitationKids Definition
chemistry
noun
chem·is·try
ˈkem-ə-strē
1
: a science that deals with the composition, structure, and properties of substances and with the changes that they go through
2
: chemical composition, properties, or processes
the chemistry of gasoline
the chemistry of iron
the chemistry of blood
chemist
noun
-əst
Medical Definition
chemistry
noun
chem·is·try
ˈkem-ə-strē
plural chemistries
1
: a science that deals with the composition, structure, and properties of substances and of the transformations that they undergo
2
a
: the composition and chemical properties of a substance
the chemistry of hemoglobin
b
: chemical processes and phenomena (as of an organism)
blood chemistry
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