[es-ter] /ˈɛs tər/
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 .
(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
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).
ester es·ter (ěs’tər)
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.
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.
[es-tuh-reys, -reyz] /ˈɛs təˌreɪs, -ˌreɪz/ noun, Biochemistry. 1. any enzyme that hydrolyzes an into an alcohol and an acid. /ˈɛstəˌreɪs; -ˌreɪz/ noun 1. any of a group of enzymes that hydrolyse esters into alcohols and acids esterase es·ter·ase (ěs’tə-rās’, -rāz’) n. Any of various enzymes that catalyze the hydrolysis of an ester.
[ree-uh l-tahym, reel-] /ˈri əlˈtaɪm, ˈril-/ adjective, Computers. 1. of or relating to applications in which the computer must respond as rapidly as required by the user or necessitated by the process being controlled. [ree-uh l, reel] /ˈri əl, ril/ noun 1. Computers. the actual time elapsed in the performance of a computation by a […]
[es-ter-hah-zee; French e-ster-a-zee] /ˈɛs tərˌhɑ zi; French ɛ stɛr aˈzi/ noun 1. Marie Charles Ferdinand Walsin [ma-ree sharl fer-dee-nahn val-san] /maˈri ʃarl fɛr diˈnɑ̃ valˈsɛ̃/ (Show IPA), 1847–1923, French army officer who confessed forging evidence that convicted Alfred Dreyfus. [es-ter-hah-zee; Hungarian es-ter-hah-zi] /ˈɛs tərˌhɑ zi; Hungarian ˈɛs tɛrˌhɑ zɪ/ noun 1. Prince Miklós József [mi-klohsh […]
[e-ster-uh-fahy] /ɛˈstɛr əˌfaɪ/ verb (used with or without object), esterified, esterifying. Chemistry. 1. to convert into an . /ɛˈstɛrəˌfaɪ/ verb -fies, -fying, -fied 1. (chem) to change or cause to change into an ester esterification es·ter·i·fi·ca·tion (ě-stěr’ə-fĭ-kā’shən) n. A chemical reaction resulting in the formation of at least one ester product. es·ter’i·fied (ě-stěr’ə-fīd’) adj.