ester
noun
es·ter
| \ ˈe-stər
\
\
Definition of ester
: any of a class of often fragrant organic compounds that can be represented by the formula RCOOR′ and that are usually formed by the reaction between an acid and an alcohol with elimination of water
Examples of ester in a Sentence
Recent Examples on the Web
White Carolinas are full of gamma-Decalactone, esters that convey the flavor of a mid-summer peach. — Dana Goodyear, The New Yorker, "Rosé Berries Have Arrived," 11 Aug. 2019 Choose an ultra gentle micellar cleanser such as Bioderma Sensibio H2O Micellar Cleansing Water, which contains fatty acid esters that naturally help rebuild the skin's hydrolipidic film. — Beth Janes, Good Housekeeping, "Are You Moisturizing Your Skin Correctly?," 2 Aug. 2019 Slightly sweet, with plenty of those banana-y esters and a slight clove finish, this still-refreshing beer is exactly what it is supposed to be. — Jess Fleming, Twin Cities, "Yoerg Brewing’s Hefeweizen is a good example of style," 30 July 2019 Blonde: These have a hint of sweetness and spice, with some fruity ester flavors. — oregonlive.com, "7 beers we can’t wait to try at the 2019 Oregon Brewers Festival," 19 July 2019 The sebaceous glands are responsible for producing sebum, which is a cocktail of wax esters, triglycerides, and squalene, Dr. Stevenson says. — Sarah Jacoby, SELF, "What the Heck Is Squalane Oil and Why Is It Suddenly in All My Skin-Care Products?," 20 June 2019 The wax esters carried traces of archaea cell membranes, so the researchers hypothesize that the bacteria scavenged remains of archaea. — Shannon Hall, Scientific American, "The Not So Dead Sea: Traces of Ancient Bacteria Found in the Lake’s Sediments," 5 June 2019 In layman's terms, retinyl ester is a less concentrated form of vitamin A, which isn't as aggressive on sensitive complexions. — Kaleigh Fasanella, Allure, "How to Use Retinols on Sensitive Skin, According to Dermatologists," 23 Aug. 2018 Try a gentler version first Aside from prepping the skin, Zeichner's biggest tip is to consider first experimenting with what's called a retinyl ester. — Kaleigh Fasanella, Allure, "How to Use Retinols on Sensitive Skin, According to Dermatologists," 23 Aug. 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ester.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for ester
ester
noun
es·ter
| \ ˈes-tər
\
\
Medical Definition of ester
: any of a class of often fragrant compounds that can be represented by the formula RCOOR′ and that are usually formed by the reaction between an acid and an alcohol usually with elimination of water
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