hem·er·a·lo·pia \ˌ ̷ ̷ ̷ ̷ ̷ ̷ˈlōpēə\noun (-s) Etymology: New Latin, from Greek hēmeralōp-, hēmeralōps (from hēmera day + alaos blind + ōp-, ōps eye) + New Latin -ia 1.: a defect of vision characterized by reduced visual capacity in bright lights — called also day blindness 2.: nyctalopia • hem·er·a·lopic\| ̷ ̷ ̷ ̷ ̷ ̷|läpik\adjective