ether
英['i?θ?]
美['iθ?]
英英釋意
- 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
