1.Definition: (of especially business assets) not having physical substance or intrinsic productive value

"Intangible assets such as good will"

2.Definition: hard to pin down or identify

"An intangible feeling of impending disaster"

3.Definition: incapable of being perceived by the senses especially the sense of touch

"The intangible constituent of energy"

Related Adjective(s):impalpable

4.Definition: lacking substance or reality; incapable of being touched or seen

"That intangible thing--the soul"

Related Adjective(s):nonphysical