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

Examples of ceramide in a Sentence

Recent Examples on the Web

At the same time, nourishing ingredients like hyaluronic acid and ceramides deeply moisturize lips. —Kiana Murden, Vogue, 25 Dec. 2024

That's all thanks to this serum's potent concoction of conditioning ceramides, glycerin, and split end-sealing polymers. —Marci Robin, Allure, 21 Dec. 2024

Then, both derms recommend following that up with a moisturizer containing soothing all-stars like hyaluronic acid, glycerin, and ceramides, or an occlusive like petroleum jelly to protect and lock hydration into your irritated skin. —Jenna Ryu, SELF, 20 Dec. 2024

Dry skin lacks ceramides, a key component of the skin’s moisture barrier. —Kirsten Chanel Webber, Rolling Stone, 17 Dec. 2024

Word History

Etymology

cerebroside + amide

First Known Use

1958, in the meaning defined above

Medical 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