: 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
Regardless if your current color is natural, salon-made, or DIY, Living Proof's intensive formulation of conditioning ingredients like jojoba esters, glycerin, triglycerides, and sodium hyaluronate plump and smooth each strand, leaving a shinier finish behind in the process.
—
Deanna Pai, Allure, 8 Aug. 2024
Combining both physical exfoliants (jojoba esters and pumice) and chemical exfoliants (AHA, BHA and PHA), this scrub is effective while still being gentle.
—Venus Wong, refinery29.com, 5 Apr. 2024
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
See all Example Sentences for ester 
Deanna Pai, Allure, 8 Aug. 2024
Combining both physical exfoliants (jojoba esters and pumice) and chemical exfoliants (AHA, BHA and PHA), this scrub is effective while still being gentle.
—Venus Wong, refinery29.com, 5 Apr. 2024
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
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.
Dictionary Entries Near ester
Cite this Entry
“Ester.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ester. Accessed 19 Aug. 2024.
Copy CitationKids Definition
ester
noun
es·ter
ˈes-tər 
: an organic compound formed by the reaction between an acid and an alcohol
Medical Definition
ester
noun
es·ter
ˈes-tər
: 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share