Ether is defined as a clear, flammable liquid used as an aesthetic, or the upper sky beyond the clouds.(noun)
See ether in Webster's New World College Dictionary
Origin: ME < L aether < Gr aithēr < aithein, to kindle, burn < IE base *aidh- > L aestas, summer, OE ætan, to burn
See ether in American Heritage Dictionary 4
Origin: Middle English, upper air
Origin: , from Latin aethēr
Origin: , from Greek aithēr.
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