1. the quality or state of being impossible to perceive or notice

Examples

• The imperceptibility of the changes made them difficult to track over time.
• Scientists studied the imperceptibility of certain sound frequencies to human ears.
• The spy relied on the imperceptibility of his movements in the shadows.
• The imperceptibility of the poison made it particularly dangerous.
• Due to its imperceptibility, the gas leak went unnoticed for hours.
• The artist achieved an imperceptibility of brushstrokes in the painting.