'night vision' definitions:

Definition of 'night vision'

From: WordNet
noun
The ability to see in reduced illumination (as in moonlight) [syn: night vision, night-sight, scotopic vision, twilight vision]

Definition of 'night vision'

From: GCIDE
  • night vision \night vision\ n. The ability to see in reduced illumination (as in moonlight).
  • Syn: night-sight. [WordNet 1.5]