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ester

EN[ɛstɚ] [ɛstə] [-ɛstə(ɹ)]
WEster
  • In chemistry, esters are chemical compounds derived from an acid (organic or inorganic) in which at least one -OH (hydroxyl) group is replaced by an -O-alkyl (alkoxy) group. Usually, esters are derived from a carboxylic acid and an alcohol.
FR ester
ester
ester

    Definition of ester in English Dictionary

  • NounPLestersSUF-ster
    1. (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 joined via carbon to another oxygen atom.
    2. More Examples
      1. Used in the Middle of Sentence
        • Then, lipids were quantified by densitometric scanning at 400–650 nm with triolein, cholesteryl esters and ergosterol (ERG) as standards using a Shimadzu dual-wave length chromatoscanner CS-930.
        • With respect to the cytotoxic effects, compounds 2–7 fall into two groups: the alkyl esters ( 2, 3 ) and the mofetil ester 4 on one hand, and the basic heterocyclic esters 5–7 on the other hand.
        • With respect to the cytotoxic effects, compounds 2–7 fall into two groups: the alkyl esters ( 2, 3 ) and the mofetil ester 4 on one hand, and the basic heterocyclic esters 5–7 on the other hand.
    • Part-of-Speech Hierarchy
      1. Nouns
        • Countable nouns
      Related Links:
      1. fr ester
      2. en esters
      3. fr esters
      4. en esterize
      5. en esterify
      Source: Wiktionary
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      Meaning of ester for the defined word.

      Grammatically, this word "ester" is a noun, more specifically, a countable noun.
      Difficultness: Level 7
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      Easy     ➨     Difficult
      Definiteness: Level 8
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      Definite    ➨     Versatile