ENGLISH
REFERENCE

ester

n. countable
C2 Proficiency US //ˈɛstɝ// UK //ˈɛstɐ// es·ter

n. a chemical compound that often has a pleasant, fruity smell. You find these in nature in fruits and flowers, and they are also used to make artificial flavors and perfumes.

n. an organic compound formed by the reaction between an acid and an alcohol, typically with the elimination of water. Characterised by a carbon atom double-bonded to an oxygen atom and single-bonded to an alkoxy group.


SIMPLE

The sweet smell of a banana comes from an ester.

CONTEXTUAL

Chemists often synthesise specific esters in the lab to create artificial scents for soaps and candles.

COMPLEX

In organic chemistry, the process of esterification involves a carboxylic acid reacting with an alcohol in the presence of an acid catalyst to produce an ester and water.

Usage

Often used in the plural when referring to a class of compounds or various scent profiles.

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