(biology) The dark phase in a cycle of light and darkness, especially artificially induced.

Intellectual blindness: a hardening of the mind against unwanted wisdom.

plural of scotomization

An instrument that discloses objects in the dark or in a faint light.

plural of scotoscope

(physics) Created from dark matter

plural of scotograph

(obsolete, rare) An instrument for writing in the dark, or by the blind.

plural of scotophase

plural of scotomy