from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A visual defect characterized by the inability to see as clearly in bright light as in dim light.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The inability to see clearly in bright light; day blindness
from the GNU version of the Collaborative International Dictionary of English
- n. A disease of the eyes, in consequence of which a person can see clearly or without pain only by daylight or a strong artificial light; day sight.
from The Century Dictionary and Cyclopedia
- n. In pathology, a defect of sight in consequence of which distinct vision is possible only in artificial or dim light; day-blindness. The term is also used, however, to express exactly the opposite defect of vision. See nyctalopia.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. inability to see clearly in bright light
New Latin, from Greek hēmeralōps, suffering from hemeralopia : hēmera, day + alaos, blind + ōps, eye; see nyctalopia.(American Heritage® Dictionary of the English Language, Fourth Edition)