Pronunciation: (in-viz'u-bul),[key] —adj. 1. not visible; not perceptible by the eye: invisible fluid. 2. withdrawn from or out of sight; hidden: an invisible seam. 3. not perceptible or discernible by the mind: invisible differences. 4. not ordinarily found in financial statements or reflected in statistics or a listing: Goodwill is an invisible asset to a business. 5. concealed from public knowledge.
—n. 1. an invisible thing or being.
2. the invisible,the unseen or spiritual world.