# ether
## Noun (N)
### Sense: the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies
- อีเทอร์
### Sense: any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom
### Sense: a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
### Sense: a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic