1. a colorless, highly flammable liquid used as an anesthetic or solvent
Usage: chemistry; medicine
2. the clear sky or upper regions of space
Usage: literary; poetic
3. a hypothetical medium once thought to fill all space and transmit electromagnetic waves
Usage: physics; historical

Examples

• The patient was put under anesthesia with ether before the surgery.
• Ether is commonly used as a solvent in chemical laboratories.
• The poet described the stars floating in the blue ether.
• Ancient astronomers believed celestial bodies moved through the ether.
• The concept of ether was disproven by the Michelson-Morley experiment.
• Scientists once thought light waves traveled through a medium called ether.
• The ethereal beauty of the sunset filled the evening ether.