Definition of ethereal
1a : of or relating to the regions beyond the earth
2a : lacking material substance : immaterial, intangible
b : marked by unusual delicacy or refinement
this smallest, most ethereal, and daintiest of birds— William Beebe
c : suggesting the heavens or heaven
3 : relating to, containing, or resembling a chemical ether
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Time Traveler for ethereal
The first known use of ethereal was in 1522
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