Definition of subvisual
: not visible without the aid of special instruments : subvisible
- … once you have seen the subvisual world through the microscope, you stop inventing demons and magic as the agents of change.
- —Dava Sobel
- Auroras have a wide range of brightness, usually rated from 0 to 4 on a logarithmic scale … in which each number is 10 times brighter than the previous one. Zero means subvisual, detected only with instruments.
- —Robert H Eather
