1. the quality or state of being invisible; inability to be seen
Usage: formal; less common than ‘invisibility’

Examples

• The magician’s trick relied on the invisibleness of the thin wire.
• The ghost’s invisibleness made it difficult for the researchers to study.
• Scientists are working to achieve the invisibleness of military aircraft.
• The invisibleness of germs makes proper hygiene essential.
• Her quiet nature gave her a kind of social invisibleness.