Chapter État Major to Ethmovomerine of E by Webster's Dictionary (1913 Edition)

3. (Chem.) (a) A light, volatile, mobile, inflammable liquid, (C₂H₅)₂O, of a characteristic aromatic odor, obtained by the distillation of alcohol with sulphuric acid, and hence called also sulphuric ether. It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anæsthetic. Called also ethyl oxide. (b) Any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether.

Complex ether, Mixed ether (Chem.), an oxide of two different radicals in the same molecule; as, ethyl methyl ether, C₂H₅.O.CH₃. — Compound ether (Chem.), an ethereal salt or a salt of some hydrocarbon as the base; an ester. — Ether engine (Mach.), a condensing engine like a steam engine, but operated by the vapor of ether instead of by steam.

Ethereal
(E*the"re*al) a.

1. Pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; as, ethereal space; ethereal regions.

Go, heavenly guest, ethereal messenger.

Milton.

2. Consisting of ether; hence, exceedingly light or airy; tenuous; spiritlike; characterized by extreme delicacy, as form, manner, thought, etc.

Vast chain of being, which from God began,
Natures ethereal, human, angel, man.

Pope.

3. (Chem.) Pertaining to, derived from, or resembling, ether; as, ethereal salts.

Ethereal oil. (Chem.) See Essential oil, under Essential. — Ethereal oil of wine (Chem.), a heavy, yellow, oily liquid consisting essentially of etherin, etherol, and ethyl sulphate. It is the oily residuum left after etherification. Called also heavy oil of wine (distinguished from oil of wine, or œnanthic ether). — Ethereal salt (Chem.), a salt of some organic radical as a base; an ester.

Etherealism
(E*the"re*al*ism) n. Ethereality.

Ethereality
(E*the`re*al"i*ty) n. The state of being ethereal; etherealness.

Something of that ethereality of thought and manner which belonged to Wordsworth's earlier lyrics.

J. C. Shairp.

Etherealization
(E*the`re*al*i*za"tion) n. An ethereal or spiritlike state. J. H. Stirling.

Etherealize
(E*the"re*al*ize) v. t.

1. To convert into ether, or into subtile fluid; to saturate with ether.

2. To render ethereal or spiritlike.

Etherealized, moreover, by spiritual communications with the other world.

Hawthorne.

Ethereally
(E*the"re*al*ly), adv. In an ethereal manner.

Etherealness
(E*the"re*al*ness) n. Ethereality.

Ethereous
(E*the"re*ous) a. [L. aethereus, Gr. See Ether.]

1. Formed of ether; ethereal. [Obs.]

This ethereous mold whereon we stand.

Milton.

2. (Chem.) Pertaining to, or resembling, ether.