ether

• 指一种曾被假设为充满空间并传递光波的介质，也指一种易挥发的化合物，常用作溶剂或麻醉剂。

A noun referring to a theoretical medium once believed to permeate space and transmit light waves, or a volatile chemical compound used as a solvent or anesthetic.

不可数

1. Chemical compoundC1formalscientific

   A volatile, highly flammable liquid used as an anesthetic and solvent.

   乙醚

   • The chemist stored the ether in a sealed container.
   • Ether was historically used as a general anesthetic during surgery.
   • The laboratory uses diethyl ether as a solvent for organic reactions.

   同义词diethyl etherethoxyethaneethyl ether

2. Physics conceptC2formalscientific

   A hypothetical medium formerly believed to fill all space and transmit electromagnetic waves.

   以太

   • 19th-century physicists proposed the existence of the luminiferous ether.
   • The Michelson-Morley experiment failed to detect the ether.
   • Einstein's theory of relativity eliminated the need for the ether concept.

   同义词aether

3. Poetic or literary termC2formal

   The clear sky; the upper regions of air beyond the clouds.

   苍穹

   • The birds soared into the ether.
   • The poet wrote of the ether as a realm of pure light.
   • The stars twinkled in the vast ether above.

   同义词azureblueempyreanfirmamentskywelkin