Noun

(en noun)

(geology, obsolete) Collectively, those layers of the (l)’s (l) which primarily (l) .

* 1908 , Eduard Suess [aut.], Hertha Beatrice Coryn Sollas and William Johnson Sollas [trs.], The Face of the Earth (Oxford, at the Clarendon Press), volume 3, chapter 1, page 2

So great is the part played by stratified deposits in the structure of the earth’s crust that we might be tempted to speak of the stratosphere'' of the earth in contradistinction to the ''scoriosphere of the moon.

* 1909 , Eduard Suess [aut.], Hertha Beatrice Coryn Sollas and William Johnson Sollas [trs.], The Face of the Earth (Oxford, at the Clarendon Press), volume 4, chapter 15, page 546

The stratosphere , or younger sedimentary envelope has been formed almost entirely at the expense of the Sal envelope.

(meteorology) The region of the uppermost atmosphere where temperature increases along with the altitude due to the absorption of solar ultraviolet radiation by ozone. The stratosphere extends from the tropopause (10–15 kilometers) to approximately 50 kilometers, where it is succeeded by the mesosphere.

* 1909 , Scientific Abstracts , A., volume 12, page 208 (heading)

Variation in height of the stratosphere (isothermal layer).

Noun

(organic compound, countable) A compound containing an oxygen atom bonded to two hydrocarbon groups.

(organic compound, uncountable) Diethyl ether (C₄H₁₀O), a compound used as an early anaesthetic.

(ancient philosophy, and, alchemy, uncountable) A classical physical element, considered as prevalent in the heavens and inaccessible to humans. In some versions of alchemy, this was the fifth element in addition to air, earth, fire and water.

(archaic, physics, uncountable) A substance (aether ) once thought to fill all space that allowed electromagnetic waves to pass through it and interact with matter, without exerting any resistance to matter or energy (disproved by Einstein in his Theory of Relativity).

* {{quote-magazine, date=2013-06-14, author=(Jonathan Freedland)

, volume=189, issue=1, page=18, magazine=(The Guardian Weekly) , title= Obama's once hip brand is now tainted , passage=Now we are liberal with our innermost secrets, spraying them into the public ether with a generosity our forebears could not have imagined. Where we once sent love letters in a sealed envelope, or stuck photographs of our children in a family album, now such private material is despatched to servers and clouds operated by people we don't know and will never meet.}}

The sky or heavens; the upper air.