Medical term:
nebula
neb·u·lar·ine
(neb'yū-lār'in),A toxic nucleoside isolated from the mushroom Agaricus nebularis and from Streptomyces sp.
Synonym(s): 9-β-ribofuranosylpurine, purine ribonucleoside, ribosylpurine
Farlex Partner Medical Dictionary © Farlex 2012
nebula
[neb´u-lah]1. slight corneal opacity.
2. an oily preparation for use in a nebulizer.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
neb·u·la (nebul.),
, pl.neb·u·lae
(neb'yū-lă, -lē),1. A translucent foglike opacity of the cornea.
2. A class of oily preparations, intended for application by atomization.
3. A spray.
[L. fog, cloud, mist]
Farlex Partner Medical Dictionary © Farlex 2012
nebula
(nĕb′yə-lə)n. pl. nebu·lae (-lē′) or nebu·las
1. Astronomy
a. A diffuse cloud of interstellar dust or gas or both, visible as luminous patches or areas of darkness depending on the way the mass absorbs or reflects incident light or emits its own light.
b. A galaxy. No longer in technical use.
2. Medicine
a. A cloudy spot on the cornea.
b. A liquid preparation for use in a nebulizer.
neb′u·lar adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
neb·u·la
, pl. nebulae (neb'yū-lă, -lē)1. A translucent foglike opacity of the cornea.
2. A spray.
[L. fog, cloud, mist]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
nebula
A cloudy spot on the CORNEA of the eye. A central nebula can severely interfere with clear vision.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
leukoma
Dense, white, corneal opacity caused by scar tissue. A localized leukoma appears as a whitish scar surrounded by normal cornea. A generalized leukoma involves the entire cornea, which appears white, often with blood vessels coursing over its surface. Visual impairment depends on the location and extent of the leukoma. If the opacity is faint, it is called a nebula. Note: also spelt leucoma. See hyperacuity; corneal ulcer.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
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