Learner's definition of ETHER
[noncount]
1
: a liquid that burns easily, that is used to turn solid substances into liquid, and that was used in medicine in the past to prevent patients from feeling pain during operations醚;乙醚
2
the ether : the air : the sky大气;天空 —
used especially when describing electronic signals that travel through the air尤用于描述无线电信号的传送