ceramide
noun
cer·amide
ˈsir-ə-ˌmīd 
ˈser-
plural ceramides
: any of various simple sphingolipids that are composed of a fatty acid linked to sphingosine, are found especially in cell membranes, are involved in mediating various cellular processes (such as those affecting cell differentiation and apoptosis), and act as precursors for more complex sphingolipids
The enzyme controls production of a cellular substance, ceramide, which triggers the natural process of egg cell death.—
L. Stivitz
L. StivitzMoisturizers containing ceramides (natural lipids that are similar in structure to those in the skin's own moisture barrier) … are also worthwhile splurges for women with dry or problem skin, according to independent tester Grove.—Constance Cardozo
Constance CardozoExamples of ceramide in a Sentence
Recent Examples on the Web
In addition to providing a temporary glow, the formula features skin-benefiting ingredients such as ceramides, vitamin E, and glycerin for long-term benefits, too.
—
Gina Vaynshteyn,
StyleCaster,
30 June 2026
Barrier-supporting ingredients like ceramides may also help keep skin comfortable, while antioxidants like vitamin E or green tea extract can offer additional protection against environmental stressors.
—
Brigitt Earley,
Glamour,
25 June 2026
The specially emulsified formula keeps the ceramides evenly dispersed (no shaking required), while the lightweight mist feels especially refreshing on hot, humid summer days.
—
Christa Joanna Lee,
Allure,
24 June 2026
It's formulated with barrier-strengthening ceramides, moisturizing shea butter, gently exfoliating urea, and lactic acid.
—
Essence Wiley,
InStyle,
24 June 2026
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Gina Vaynshteyn,
StyleCaster,
30 June 2026
Barrier-supporting ingredients like ceramides may also help keep skin comfortable, while antioxidants like vitamin E or green tea extract can offer additional protection against environmental stressors.
—
Brigitt Earley,
Glamour,
25 June 2026
The specially emulsified formula keeps the ceramides evenly dispersed (no shaking required), while the lightweight mist feels especially refreshing on hot, humid summer days.
—
Christa Joanna Lee,
Allure,
24 June 2026
It's formulated with barrier-strengthening ceramides, moisturizing shea butter, gently exfoliating urea, and lactic acid.
—
Essence Wiley,
InStyle,
24 June 2026
See All Example Sentences for ceramide
Cite this Entry
“Ceramide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ceramide. Accessed 4 Jul. 2026.
Copy CitationMedical Definition
ceramide
noun
cer·amide
ˈsir-ə-ˌmīd
: any of a group of amido sphingolipids formed by linking a fatty acid to sphingosine and found widely in small amounts in plant and animal tissue
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