ether
英 ['iːθə]
美['iθɚ]
- n. 乙醚；[有化] 以太；苍天；天空醚
英英释意
- 1. a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic
- 2. the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies
- 3. any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom
- 4. a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves