glau·co·ma

[glaw-koh-muh, glou-]
noun
Ophthalmology. abnormally high fluid pressure in the eye, most commonly caused either by blockage of the channel through which aqueous humor drains (open-angle glaucoma or chronic glaucoma) or by pressure of the iris against the lens, which traps the aqueous humor (angle-closure glaucoma or acute glaucoma)

Origin:
1635–45; < Greek glaúkōma opacity of the eye lens. See glauco-, -oma

glau·co·ma·tous [glaw-koh-muh-tuhs, -kom-uh-, glou-] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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00:10
Glaucoma is always a great word to know.
So is gobo. Does it mean:
the offspring of a zebra and a donkey.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
Collins
World English Dictionary
glaucoma (ɡlɔːˈkəʊmə) [Click for IPA pronunciation guide]
 
n
a disease of the eye in which pressure within the eyeball damages the optic disc, impairing vision, sometimes progressing to blindness
 
[C17: from Latin, from Greek glaukōma, from glaukos; see glaucous]
 
glau'comatous
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

glaucoma
1640s, from Gk. glaukoma "cataract, opacity of the lens" (cataracts and glaucoma not distinguished until c.1705), from -oma + glaukos, an adj. of uncertain origin, used in Homer of the sea as "gleaming, silvery" (apparently without a color connotation); used later with a sense
of "bluish-green, gray," of olive leaves and eyes. Homer's glauk-opis Athene could be a "bright-eyed" or a "gray-eyed" goddess. Gk. for "owl" was glauk- from its bright, staring eyes.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

glaucoma glau·co·ma (glou-kō'mə, glô-)
n.
Any of a group of eye diseases characterized by abnormally high intraocular fluid pressure, damaged optic disk, hardening of the eyeball, and partial to complete loss of vision.


glau·co'ma·tous (-kō'mə-təs) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
glaucoma   (glou-kō'mə, glô-)  Pronunciation Key 
A disease of the eye in which the pressure of fluid inside the eyeball is abnormally high, caused by obstructed outflow of the fluid. The increased pressure can damage the optic nerve and lead to partial or complete loss of vision.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
glaucoma [(glow-koh-muh, glaw-koh-muh)]

A disease of the eye marked by increased fluid pressure in the eyeball. Glaucoma can damage the optic nerve and may result in blindness if not treated. Surgery may be required for severe cases.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Diagnosis and management of chronic open angle glaucoma and ocular hypertension.
Acute glaucoma-- a sudden increase in eye pressure that is extremely painful
  and causes serious visual disturbances.
Seventy per cent of patients suffering from glaucoma risk blindness because
  they don't use their eyedrops regularly.
Glaucoma occurs when the normal fluid pressure inside the eyes slowly rises.
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