ester

noun
es·​ter | \ ˈe-stər How to pronounce ester (audio) \

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

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. 2018 Lightweight argan and tea seed oils in this formula work to moisturize dry patches and rough bumps, while vitamin C ester fades hyperpigmentation and brightens skin over time with continual use. 2. Chloe Metzger, Marie Claire, "The 5 Truly Brilliant Beauty Products I'm Loving This Week," 26 Sep. 2018 Key aromatics and flavor molecules are being identified such as citrus-like esters from ethyl isobutyrate and pineapple-y aromas derived from ethyl hexanoate or the buttery qualities found in the compound diacetyl. Alan Goldfarb, The Verge, "Artificial whiskey is coming, and one company is betting you’ll drink up," 23 Aug. 2018 Wander Beauty's Wanderlust powder foundation will take your face on an international journey via its wide-reaching ingredient list, which includes Korean aloe leaf and honeysuckle, U.S. jojoba esters, and French hibiscus. Wendy Gould, Allure, "The 9 Best Powder Foundations to Thwart Summer Sweat," 3 July 2018 Now, brewers are playing around with European yeasts, full of fruity esters and other flavor compounds, and leaving them suspended in the beer. William Bostwick, WSJ, "The Beers of Summer: Hazy IPAs," 24 May 2018

These 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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First Known Use of ester

circa 1852, in the meaning defined above

History and Etymology for ester

German, from Essigäther ethyl acetate, from Essig vinegar + Äther ether

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Dictionary Entries near ester

esteem

esteemable

esteemed

ester

esterase

Estérel

ester gum

Statistics for ester

Last Updated

4 Jul 2019

Look-up Popularity

Time Traveler for ester

The first known use of ester was circa 1852

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More Definitions for ester

ester

noun
es·​ter | \ ˈes-tər How to pronounce ester (audio) \

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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More from Merriam-Webster on ester

Rhyming Dictionary: Words that rhyme with ester

Spanish Central: Translation of ester

Nglish: Translation of ester for Spanish Speakers

Britannica.com: Encyclopedia article about ester

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