invisible
adjective
[ ɪnˈvɪzɪb(ə)l ]
• unable to be seen.
• "this invisible gas is present to some extent in every home"
• relating to or denoting earnings which a country makes from the sale of services or other items not constituting tangible commodities.
• "invisible exports"
invisible
noun
• invisible exports and imports.
Origin:
Middle English: from Old French, or from Latin invisibilis, from in- ‘not’ + visibilis (see visible).
