ester

noun

es·​ter ˈe-stər How to pronounce ester (audio)
: 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 Key Ingredients: Meadowfoam esters, hemisqualane, hibiscus extract How to Apply: Dispense a few drops into palms and rub together before smoothing down damp or dry mid-lengths and ends to tame frizz and add shine. Kiana Murden, Vogue, 15 June 2024 Ethyl ester: This is one of the most common forms of fish oil in supplements and medications and is created by exposing the fish oil to ethanol to remove contaminants and concentrate the EPA and DHA. Tamar Kane, Ms, Rd, Verywell Health, 6 June 2024 So scientists at the company began analyzing what combination of esters gave a specific beer its unique bouquet, and then varied their concentrations in an attempt to arrive at something roughly equivalent to a Corona or Stella Artois. Christiaan Hetzner, Fortune, 4 May 2024 While the new vacuum distillation process is far better at retaining the 250 various chemical markers known as esters that create a beer’s scent, non-alc beers do not smell the same. Christiaan Hetzner, Fortune, 4 May 2024 See all Example Sentences for ester 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ester.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

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

First Known Use

circa 1852, in the meaning defined above

Time Traveler
The first known use of ester was circa 1852

Dictionary Entries Near ester

Cite this Entry

“Ester.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ester. Accessed 4 Jul. 2024.

Kids Definition

ester

noun
es·​ter ˈes-tər How to pronounce ester (audio)
: an organic compound formed by the reaction between an acid and an alcohol

Medical Definition

ester

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