from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Total loss of vision, especially when occurring without pathological changes to the eye.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any form of blindness that is accompanied to no obvious change to the eye; often the result of disease of the optic nerve
from the GNU version of the Collaborative International Dictionary of English
- n. A loss or decay of sight, from loss of power in the optic nerve, without any perceptible external change in the eye; -- called also gutta serena, the “drop serene” of Milton.
from The Century Dictionary and Cyclopedia
- n. A partial or total loss of sight independent of any discoverable lesion in the eye itself: formerly and still sometimes called gutta, serena; by Milton “a drop serene,” P. L., iii. 25.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. partial or total loss of sight without pathology of the eye; caused by disease of optic nerve or retina or brain
Greek amaurōsis, from amauros, dark.(American Heritage® Dictionary of the English Language, Fourth Edition)