noun
Refers to the chemical compound diethyl ether, historically used as an anesthetic, or the classical element believed to fill space. In modern contexts, it can also appear in physics and chemistry terminology.
from Dutch
19世紀には、エーテルが麻酔薬として使われていた。
In the 19th century, ether was used as an anesthetic.
古代ギリシャでは、エーテルは天界を満たす元素
In ancient Greece, ether was thought to be the element that fills the heavens.