from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Vision in dim light.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The ability, either naturally, by technology or by superpowers, to see in a low light or even dark environment.
from the GNU version of the Collaborative International Dictionary of English
- n. The ability to see in reduced illumination (as in moonlight).
from The Century Dictionary and Cyclopedia
- n. Vision or sight that is strongest and best at night; ability to see clearly only at night or in a dim light.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the ability to see in reduced illumination (as in moonlight)
Sorry, no etymologies found.