follow Dictionary.com

Denotation vs. Connotation

ester

[es-ter] /ˈɛs tər/
noun, Chemistry
1.
a compound produced by the reaction between an acid and an alcohol with the elimination of a molecule of water, as ethyl acetate, C 4 H 8 O 2 , or dimethyl sulfate, C 2 H 6 SO 4 .
Origin of ester
1850-1855
1850-55; coined by L. Gmelin (1788-1853), German chemist
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for ester
Historical Examples
  • These statistics confirm the evidence that the ester reaction is not simple.

  • ester would have known just what, and how; and how interested she would have been!

    Ester Ried Yet Speaking Isabella Alden
  • The professor's happiness and his adoration of ester would deserve to be told in verse!

    The Patriot Antonio Fogazzaro
  • It was the morning after you had told me that about ester Ried.

    Ester Ried Yet Speaking Isabella Alden
  • It was then thought that perhaps the oil could be converted into an ester which might be more volatile and could be distilled out.

  • It is one of the best suggestions that that dear ester has given us.

    Ester Ried Yet Speaking Isabella Alden
  • He saw that ester's wish would soon be gratified, but not by his means.

    The Patriot Antonio Fogazzaro
  • "Yes, yes," ester replied thoughtlessly, to put an end to these questions.

    The Patriot Antonio Fogazzaro
  • Seated on the sofa where ester and the Professor had sat, he seemed turned to stone.

    The Patriot Antonio Fogazzaro
  • Luisa went back to the hall, where she found ester, the Professor, and Maria.

    The Patriot Antonio Fogazzaro
British Dictionary definitions for ester

ester

/ˈɛstə/
noun
1.
(chem) any of a class of compounds produced by reaction between acids and alcohols with the elimination of water. Esters with low molecular weights, such as ethyl acetate, are usually volatile fragrant liquids; fats are solid esters
Word Origin
C19: from German, probably a contraction of Essigäther acetic ether, from Essig vinegar (ultimately from Latin acētum) + Ätherether
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for ester
n.

compound formed by an acid joined to an alcohol, 1852, coined in German in 1848 by German chemist Leoipold Gmelin (1788-1853), professor at Heidelberg. "[A]pparently a pure invention" [Flood], perhaps a contraction of or abstraction from Essigäther, the German name for ethyl acetate, from Essig "vinegar" + Äther "ether" (see ether).

Essig is from Old High German ezzih, from a metathesis of Latin acetum (see vinegar).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
ester in Medicine

ester es·ter (ěs'tər)
n.
Any of a class of organic compounds corresponding to the inorganic salts and formed from an organic acid and an alcohol, usually with the elimination of water.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
ester in Science
ester
  (ěs'tər)   
An organic compound formed when an acid and an alcohol combine and release water. Esters formed from carboxylic acids are the most common, and have the general formula RCOOR', where R and R' are organic radicals. Esters formed from simple hydrocarbon groups are colorless, volatile liquids with pleasant aromas and create the fragrances and flavors of many flowers and fruits. They are also used as food flavorings. Larger esters, formed from long-chain carboxylic acids, commonly occur as animal and vegetable fats, oils, and waxes. Esters have a wide range of uses in industry.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for ester

Most English speakers likely know this word

Word Value for ester

5
5
Scrabble Words With Friends

Nearby words for ester