not visible; not perceptible by the eye

invisible fluid.

withdrawn from or out of sight; hidden

an invisible seam.

not perceptible or discernible by the mind

invisible differences.

not ordinarily found in financial statements or reflected in statistics or a listing

Goodwill is an invisible asset to a business.

concealed from public knowledge.

an invisible thing or being.

the invisible, the unseen or spiritual world.

adjective

detectable , obvious , seen , visible

adjective

concealed , covert , deceptive , disguised , ethereal , gaseous , ghostly , ideal , impalpable , imperceptible , imponderable , inappreciable , inconspicuous , indiscernible , infinitesimal , insensible , intangible , masked , microscopic , not in sight , obliterated , obscured , occult , out of sight , perdu , screened , supernatural , ulterior , unapparent , undisclosed , ungraspable , unnoticeable , unobservable , unperceivable , unreal , unseeable , unseen , unviewable , vaporous , veiled , wraithlike , indistinguishable , evanescent , hidden , indistinct