e·the·re·al 
(
ĭ-thîr
ē-
əl)
adj.1. Extremely light or delicate:
"An ant lion ... is lovely, long-bodied like a damselfly, with a pair of ethereal wings" (Jennifer Ackerman). 2. a. Of the celestial spheres; heavenly.
b. Spiritual or otherworldly.
3. Chemistry Of or relating to ether.
[From Latin aetherius, from Greek aitherios, from aithēr, upper air.]
e·the′re·ali·ty (-ălĭ-tē), e·there·al·ness n.
e·there·al·ly adv.