Ester Definition

ĕstər
esters
noun
Any of a class of compounds derived from an oxyacid, usually resulting from the reaction of an oxyacid and an alcohol with the elimination of water.
American Heritage
An organic compound, comparable to an inorganic salt: generally, HR (inorganic acid) + R1OH (alcohol) = RR1 (ester) + H2O (water) or RCOOH (organic acid) + R1OH = RCOOR1 (ester) + H2O.
Webster's New World
Synonyms:

Other Word Forms of Ester

Noun

Singular:
ester
Plural:
esters

Origin of Ester

  • German short for Essigäther Essig vinegar (from Middle High German ezzich) (from Old High German ezzīh) (from Latin acētum ak- in Indo-European roots) Äther ether (from Latin aethēr ether)

    From American Heritage Dictionary of the English Language, 5th Edition

  • Contraction or abstraction of German Essigäther (“ethyl acetate”), from Essig (“vinegar”) (from Latin acetum) and Äther (“ether”). See ether for more.

    From Wiktionary

Ester Sentence Examples

  • It is the methyl ester of a neutral body colchicein, which may be obtained in white acicular crystals.

  • We may here mention the synthesis of oxyuvitic ester (5-methyl-4-oxy-I-3-benzene dicarboxylic ester) by the condensation of two molecules of sodium acetoacetic ester with one of chloroform (Ann., 1883, 222, p. 249).

  • Many esters of malonic acid have been prepared, the most important being the diethyl ester (malonic ester), CH 2 (000C 2 H 5) 2, which is obtained by dissolving monochloracetic acid in water, neutralizing the solution with potassium carbonate, and then adding potassium cyanide and warming the mixture until the reaction begins.

  • The half nitrile of malonic acid is cyanacetic acid, CN CH 2 COOH, which, in the form of its ester, may be obtained by the action of a solution of potassium cyanide on monochloracetic acid.

  • Held synthesized the acid from ethyl chlor-acetoacetate (from chlorine and acetoacetic ester) by heating with potassium cyanide and saponifying the resulting nitrile.

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Words Starting With

EESEST

Words Ending With

RERTER

Unscrambles

ester

Words Starting With E and Ending With R

Starts With E & Ends With RStarts With ES & Ends With RStarts With E & Ends With ER

Word Length

5 Letter Words5 Letter Words Starting With E5 Letter Words Ending With R