from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Either of the second pair of cranial nerves that arise from the retina and carry visual information to the thalamus and other parts of the brain.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Either of a pair of nerves that carry visual information from the retina to the brain
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the cranial nerve that serves the retina
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