OXFORD 9000
📚 noun • entry_id 3951

ether

/ˈiː.θə/
Meanings (ES + gloss)
éter
Often as aether and more fully as luminiferous aether: a substance once thought to fill all unoccupied space that allowed electromagnetic waves to pass through it and interact with matter, without exerting any resistance to matter or energy; its existence was disproved by the 1887 Michelson–Morley experiment and the theory of relativity propounded by Albert Einstein (1879–1955).
"The ether. The earth browses upon a circular path in the fields of space, and as it moves the ether is continually pouring through it and providing its vitality."
éter
Any of a class of organic compounds containing an oxygen atom bonded to two hydrocarbon groups.
M. Malaguti finds that dry chlorine, while acting in the dark upon oxacid æthers, always attacks, and in a uniform manner, the sulphuric æther which is the base of them. […] The ac…
When chlorine gas is passed in excess through salicylic ether (salicylae of ethyl) heated over a water-bath, a solid substance is formed which is soluble in hot alcohol, and crysta…