Consisting of ether; hence, exceedingly light or airy; tenuous; spiritlike; characterized by extreme delicacy, as form, manner, thought, etc.
Pertaining to the (real or hypothetical) upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere.
To do with diethyl ether.
Pertaining to the immaterial realm, as symbolically represented by, or (in earlier epochs) conflated with, such atmospheric and extra-atmospheric concepts.
Mystical or supernatural.
Concerned with the a priori or intuitive basis of knowledge, independent of experience.
That contains elements that are not algebraic.
Not algebraic (i.e., not the root of any polynomial that has positive degree and rational coefficients).
Superior; surpassing all others; extraordinary; transcendent.
Any one of the three transcendental properties of being: truth, beauty or goodness, which respectively are the ideals of science, art and religion and the principal subjects of the study of logic, aesthetics and ethics.