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
For Off Campus actresses Ella Bright and Mika Abdalla, who portray best friends and roommates Hannah Wells and Allie Hayes in Season 1 of the Prime Video adaptation based on Elle Kennedy’s books, a key scene in the finale served as their chemistry read.
—
Dessi Gomez, Deadline, 15 May 2026
Patagonia transitioned all waterproof products to PFAS-free chemistry as of spring 2025, and H&M, Levi’s and UNIQLO have committed to PFAS bans across their lines.
—Allison Palmer, Fort Worth Star-Telegram, 15 May 2026
But once that stupendous on-screen chemistry between co-stars David Tennant and Michael Sheen kicks back in, the old magic shines through, strong as ever, giving us a fitting end to this beloved comic saga.
—ArsTechnica, 15 May 2026
The mechanism, Perlman explained, comes down to body chemistry.
—Samantha Agate, Miami Herald, 15 May 2026
See All Example Sentences for chemistry
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Dessi Gomez, Deadline, 15 May 2026
Patagonia transitioned all waterproof products to PFAS-free chemistry as of spring 2025, and H&M, Levi’s and UNIQLO have committed to PFAS bans across their lines.
—Allison Palmer, Fort Worth Star-Telegram, 15 May 2026
But once that stupendous on-screen chemistry between co-stars David Tennant and Michael Sheen kicks back in, the old magic shines through, strong as ever, giving us a fitting end to this beloved comic saga.
—ArsTechnica, 15 May 2026
The mechanism, Perlman explained, comes down to body chemistry.
—Samantha Agate, Miami Herald, 15 May 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 21 May. 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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