: 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
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Meanwhile, retinyl ester is the least potent (and most stable) form of vitamin A out of the three.
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Venus Wong, refinery29.com, 5 Sep. 2024
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
See all Example Sentences for ester 
Venus Wong, refinery29.com, 5 Sep. 2024
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
See all Example Sentences for ester
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“Ester.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ester. Accessed 11 Sep. 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
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