CEFR B1

Ester

noun

Meaning

(organic chemistry) A compound most often formed by the condensation of an alcohol and an acid, with elimination of water, which contains the functional group carbon-oxygen double bond (i.e., carbonyl) joined via carbon to another oxygen atom.

Examples

An ester can be important in texts about precise reading and writing.
In the article, "ester" meant (organic chemistry) A compound most often formed by the condensation of an alcohol and an acid, with elimination of water, which contains the functional group carbon-oxygen double bond (i.e., carbonyl) joined via carbon to another oxygen atom.

Examples

An ester can be important in texts about precise reading and writing.

In the article, "ester" meant (organic chemistry) A compound most often formed by the condensation of an alcohol and an acid, with elimination of water, which contains the functional group carbon-oxygen double bond (i.e., carbonyl) joined via carbon to another oxygen atom.

The teacher asked students to explain "ester" from the sentence instead of guessing from the word alone.

How to Use Ester

an ester (noun phrase)

refers to one example or case of ester — "The text introduced an ester before giving an example."

the ester of something (noun pattern)

connects ester to a specific topic or object — "The paragraph explained the ester of the topic in simple language."

ester in context (reading pattern)

uses nearby words to choose the right sense — "The learner checked ester in context before writing it down."

Ester

Meaning

Examples

Ester (B1)

Definition

Examples

How to Use Ester