Chemistry. (formerly) one of a class of compounds in which two organic groups are attached directly to an oxygen atom, having the general formula ROR. the upper regions of space; the clear sky; the heavens. the medium supposed by the ancients to fill the upper regions of space. Physics....
However. modern cosmological theories based on quantum field theory do not rule out the possibility that the inherent energy of the vacuum is greater than zero, in which case the concept of an ether pervading the vacuum may have more than metaphoric meaning. Ether Supposed matter above the air...
The Greek and Latin words for these elements still show up in our language today. Aither, a Greek word meaning "pure or upper sky," was a fifth element that was thought to be a purer and higher form of fire or air, and it was the most sacred of all the elements. Here are links ...
,Chemistry. ether ( def 1 ). Discover More Word History and Origins Origin ofdiethyl ether1 First recorded in 1925–30;di-1+ethyl add this widget to your site Did You Know? Tuxedo was given its name after gaining popularity among diners at Tuxedo Park, NY. ...
Meaning of Compound ether from wikipedia - Compound spirit of ether, also called Hoffmann's anodyne, Hoffmann's drops, or aetheris spiritus compositus, is a solution of one part diethyl ether in...- Diethyl ether, or simply ether, is an organic compound with the chemical formula (CH3CH2)...
Slang meaning "phonograph record" (1976) replaced wax (n.) in that sense. In chemistry, vinyl was used from 1851 as the name of a univalent radical deri rosarymid-15c., rosarie, "rose garden, ground set apart for the cultivation of roses," a sense now obsolete, from Latin rosarium ...
,Chemistry. ,e·ther·i·fied,e·ther·i·fy·ing. to convert into anether. Discover More Other Words From e·ther i·fi·ca tionnoun Discover More Word History and Origins Origin ofetherify1 First recorded in1855–60;ether+-ify
nylon 66 and 2.3-3.0 for the blends, meaning that there are no significant changes in the Avrami exponent n for pure nylon 66 and the blends because the small change of the exponent n in the range of 0.2---0.3 is trivial in Avrami analysis. From the results in Figure 3 and Table I...
Naphthyl ethers of the formula I in which the index and the substituents have the following meaning: A is optionally substituted phenyl or optionally substituted 5- to 6-membered heteroaryl which, in addition to carbon ring me... GRAMMENOS WASSILIOS DR.,KIRSTGEN REINHARD DR.,KOENIG HARTMANN DR...
The term "petroleum ether" is an old term used to refer to amixtureofhydrocarbonswith a specific boiling point range. In other words, there is no ether in petroleum ether! Synonyms for petrolem ether include naphtha, petroleum benzin, benzin, and the lab slang, "pet ether". The petroleum...