e·the·re·al

 [ih-theer-ee-uhl] 

adjective

1.

light, airy, or tenuous: an ethereal world created through the poetic imagination.

2.

extremely delicate or refined: ethereal beauty.

3.

heavenly or celestial: gone to his ethereal home.

4.

of or pertaining to the upper regions of space.

5.

Chemistry . pertaining to, containing, or resembling ethyl ether.