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
Moisturizers 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
Cite this Entry
“Ceramide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ceramide. Accessed 5 Aug. 2026.
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