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In organic chemistry, ethers are a class of compounds that contain an ether group —an oxygen atom bonded to two organyl groups (e.g., alkyl or aryl ). They have the general formula R−O−R′, where R and R′ represent the organyl groups.
noun. uk / ˈiː.θə r/ us / ˈiː.θɚ / ether noun (MEDICAL) Add to word list. [ U ] a clear liquid used, especially in the past, as an anaesthetic to make people sleep before a medical operation: Ether anaesthesia was introduced in 1846. Police said he drugged her with ether and handcuffed her to a wall. SMART Vocabulary: related words and phrases.
1. a. : the rarefied element formerly believed to fill the upper regions of space. b. : the upper regions of space : heavens. 2. a. : a light volatile flammable liquid C4H10O used chiefly as a solvent and especially formerly as an anesthetic. b. : any of a class of organic compounds characterized by an oxygen atom attached to two carbon atoms. 3. a
Jan 27, 2020 · Ethers are a class of organic compounds that mostly contain an ether group wherein the oxygen atom is bonded to two alkyl or aryl groups. The word Ether has been derived from the Latin word ‘aether’ which means ‘to ignite’. At room temperature and under a high-pressure, ethers are usually flammable.
ether, in physics, a theoretical universal substance believed during the 19th century to act as the medium for transmission of electromagnetic waves (e.g., light and X-rays ), much as sound waves are transmitted by elastic media such as air.
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The main difference between ether and ester lies in their structure. An ester group requires two oxygen atoms and two carbon atoms to complete its characteristic structure, while an ether group only needs one oxygen atom and two carbon atoms for its structure.
Jun 28, 2024 · ètêr (plural eter-eter, first-person possessive eterku, second-person possessive etermu, third-person possessive eternya) ether: (organic chemistry) organic compound containing an oxygen atom bonded to two hydrocarbon groups. fifth element of Aristotelian natural philosophy, supposed to be the building block of the heavens.
Nov 19, 2018 · Imbued with contemporary relevance, Zanussi’s epistemological examination of empiricism and theology makes for thought-provoking viewing. Screening at the IFI on the 8th of December 2018 https ...
Oct 22, 2018 · ‘Ether’ (‘Eter’): Film Review | Rome 2018 Jacek Poniedzialek plays a sinister medic running dangerous experiments in Polish maestro Krzysztof Zanussi’s pre-World War I drama 'Ether,' set ...
