ester

From German Ester, perhaps a contraction or abstraction of Essigäther (“ethyl acetate”), from Essig (“vinegar”) (from Latin acetum) and Äther (“ether”). See ether for more.

• (General American) IPA^(key): /ˈɛstɚ/
• (Received Pronunciation) IPA^(key): /ˈɛstə/
• Rhymes: -ɛstə(ɹ)
• Homophone: Esther

ester (plural esters)

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.
   • 1991, Malcolm B. Hale et al., “New Products and Markets for Menhaden, Brevoortia spp.”, in Marine Fisheries Review, volume 53, number 4, page 47:

     To produce a test material containing at least 75 percent omega-3 polyunsaturates, the menhaden triglycerides are transesterified to produce fatty acid ethyl esters. The esters are reacted with urea dissolved in hot ethanol and the solution is cooled overnight.

   • 1991, W. F. Kean, C. J. L. Lock, and H. E. Howard-Lock, “Chirality in antirheumatic drugs”, in The Lancet, volume 338, DOI:10.1016/0140-6736(91)92382-C, page 1567:

     The thiol-coenzyme-A ester formed by R-arylpropionic acid can bind to triglyceride to form a “hybrid” triglyceride: such hybrid triglycerides can cause alteration of fatty-acid metabolism and membrane function, and a lipophilic triglyceride–propionic-acid hybrid would be able to cross lipid membranes such as the blood–brain barrier.

   • 1996, Steven Ashley, “Composite car structures pass the crash test”, in Mechanical Engineering‎, volume 118, number 12, page 60:

     The effort’s primary material systems are vinyl esters and polyurethanes, reinforced with inexpensive chopped-glass rovings. Automated glass-fiber preforming processes and high-rate molding procedures are being studied in an effort to reduce cycle times and production costs substantially.

• Reset, Steer, estre, re-est., reest, reset, retes, seter, steer, stere, teers, teres, terse, trees

ester f (singulative estren)

1. oysters

ester m

1. ester

• ester in Příruční slovník jazyka českého, 1935–1957
• ester in Slovník spisovného jazyka českého, 1960–1971, 1989

ester c (singular definite esteren, plural indefinite estere)

1. Estonian

• estlænder

From German Ester

ester c (singular definite esteren, plural indefinite estere)

1. ester

• polyester

• “ester” in Den Danske Ordbog

Borrowed from German Ester.

• IPA^(key): /ˈɛs.tər/

• Audio

  (file)

ester m (plural esters, diminutive estertje n)

1. (organic chemistry) ester

ester (genitive estri, partitive estrit)

1. (organic chemistry) ester

From Old French ester, from Vulgar Latin *estō, from Classical Latin stō (cf. also the juridical Medieval Latin senses), from Proto-Indo-European *steh₂-.

• IPA^(key): /ɛs.te/

ester

1. (law, rare) to appear
2. (archaic) to be

Only used in the infinitive, present participle estant and past participle esté.

• être

From German Essig-Äther (“acetic acid ethyl ester”).

• IPA^(key): /ɛs.tɛʁ/

ester m (plural esters)

1. (organic chemistry) ester

• estre, êtres, reste, resté, stère, stéré, terse, tersé

• “ester” in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

From Latin exterus, from exter.

ester m (feminine singular estera, masculine plural esters, feminine plural esteres)

1. foreign, overseas

From Latin sum.

• esse
• vester
• esser

ester

1. to be

• Ladin conjugation varies from one region to another. Hence, the following conjugation should be considered as typical, not as exhaustive.

• aster, astern, eastran, estern, estre, estren, yestre

From Old English ēaster.

ester (plural esters)

1. Easter (Christian holiday)
   • c. 1280, “Vita sancti Brendani, Abbatis de Hybernia”, in Carl Horstmann, editor, The Early South English Legendary or Lives of Saints‎, London: N. Trübner & Co., published 1887, page 224:

     To a stede ȝe schulle hunne wende : þurf oure louerdes grace, / Þat is foweles parays : a wel ioyful place : / Þer ȝe schulle þis ester beo : & þis wit-sonedai also.

     (please add an English translation of this quote)

   • c. 1300, Robert of Gloucester, William Aldis Wright, editor, The Metrical Chronicle of Robert of Gloucester, London: Eyre and Spottiswoode, published 1887, page 556:

     Þre siþe he ber croune aȝer · to midewinter at gloucestre · / To witesonetid at westmunstre · to ester at wincestre ·

     (please add an English translation of this quote)

   • a. 1402, John Trevisa, transl., “De regione lodœœ”, in Joseph Rawson Lumby, editor, Polychronicon, page 111:

     Mysbyleued men mysdede neuere þat chirche ; and þat is, as me troweþ, for euery ȝere an Ester eue comeþ fire from heuene, and tendeþ and liȝteþ þe lamps þerynne ; but whan þat miracle bygan first, hit is vncertayne and vnknowe.

     (please add an English translation of this quote)

“ēster(n, n., MED14534.” in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.

ester m (definite singular esteren, indefinite plural estere, definite plural esterne)

1. Estonian

• estlending, estlender

• Estland
• estlandsk, estisk

From Late Latin or Vulgar Latin estō, from Latin stō. Compare with estre.

ester

1. to be
2. to stay; to remain

According to the Anglo-Norman On-Line Hub, "[i]t is not always possible to make a valid distinction between and ester and estre"[1].

This verb conjugates as a first-group verb ending in -er. This verb is highly irregular. Old French conjugation varies significantly by date and by region. The following conjugation should be treated as a guide.

• Middle French: ester
  • French: être (in part)

ester m inan

1. ester (organic compound)

ester c

1. an ester
2. indefinite plural of est