subvisual

/sʌbˈvɪʒuəl/
adjective
  1. Too small or faint to be seen clearly by the naked eye; below the threshold of normal vision.
    • Some subvisual particles in the air can still affect people with allergies.
    • The security camera captured subvisual movements that the guard missed.
    • The artist added subvisual details that only become visible under a microscope.
Antonyms
What does "subvisual" mean? | whatsthatwordmean | whatsthatwordmean