ester

[ es-ter ]

/ ˈɛs tər /

noun Chemistry.

a compound produced by the reaction between an acid and an alcohol with the elimination of a molecule of water, as ethyl acetate, C4H8O2, or dimethyl sulfate, C2H6SO4.

Origin of ester

First recorded in 1850–55; coined by L. Gmelin (1788–1853), German chemist

Words nearby ester

estazolam, Este, esteem, Estelle, Estepona, ester, esterase, ester gum, Esterhazy, esterification, esterify

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ester

Ester made a despairing gesture and went on without answering.
The Patriot|Antonio Fogazzaro
He saw that Ester's wish would soon be gratified, but not by his means.
The Patriot|Antonio Fogazzaro
Robert loved freedom as dearly as he loved Ester Goffe, and one was as necessary to his existence as the other.
The Real America in Romance, Volume 6;|John R. Musick
They confirm the probability of the occurrence of secondary changes in the ester reactions.
Researches on Cellulose|C. F. Cross

It is one of the best suggestions that that dear Ester has given us.
Ester Ried Yet Speaking|Isabella Alden

British Dictionary definitions for ester

ester

/ (ˈɛstə) /

noun

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 for ester

C19: from German, probably a contraction of Essigäther acetic ether, from Essig vinegar (ultimately from Latin acētum) + Äther ether

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

Medical definitions for ester

ester

[ ĕs′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.

Scientific definitions for ester

ester

[ ĕs′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.

单词	ester
释义	ester [ es-ter ] / ˈɛs tər / noun Chemistry. a compound produced by the reaction between an acid and an alcohol with the elimination of a molecule of water, as ethyl acetate, C4H8O2, or dimethyl sulfate, C2H6SO4. Origin of ester First recorded in 1850–55; coined by L. Gmelin (1788–1853), German chemist Words nearby ester estazolam, Este, esteem, Estelle, Estepona, ester, esterase, ester gum, Esterhazy, esterification, esterify Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for ester Ester made a despairing gesture and went on without answering. The Patriot\|Antonio Fogazzaro He saw that Ester's wish would soon be gratified, but not by his means. The Patriot\|Antonio Fogazzaro Robert loved freedom as dearly as he loved Ester Goffe, and one was as necessary to his existence as the other. The Real America in Romance, Volume 6;\|John R. Musick They confirm the probability of the occurrence of secondary changes in the ester reactions. Researches on Cellulose\|C. F. Cross It is one of the best suggestions that that dear Ester has given us. Ester Ried Yet Speaking\|Isabella Alden British Dictionary definitions for ester ester / (ˈɛstə) / noun 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 for ester C19: from German, probably a contraction of Essigäther acetic ether, from Essig vinegar (ultimately from Latin acētum) + Äther ether 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 Medical definitions for ester ester [ ĕs′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. Scientific definitions for ester ester [ ĕs′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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
随便看	realize real-life real line reallocate really realm real money trade real number real part realpolitik real presence real property real storage real tennis real time real-time strategy real-time ultrasound realtor realty real variable real wages real world ream reamer rean