1.assets that are saleable though not material or physical
2.(of especially business assets) not having physical substance or intrinsic productive value;
intangible assets such as good will
3.incapable of being perceived by the senses especially the sense of touch;
the intangible constituent of energy- James Jeans
4.hard to pin down or identify;
an intangible feeling of impending disaster
5.lacking substance or reality; incapable of being touched or seen;
that intangible thing--the soul