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diffuse nebulae
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diffuse nebula
Dictionary.com Unabridged
noun, plural neb·u·lae 
[-lee, -lahy] , neb·u·las.
[-lee, -lahy] , neb·u·las. 1.
Astronomy.
a.
Also called diffuse nebula. a cloud of interstellar gas and dust. Compare dark nebula, emission nebula, reflection nebula.
2.
Pathology.
a.
a faint opacity in the cornea.
b.
cloudiness in the urine.
3.
any liquid medication prepared for use as a spray.
Origin:
1655–65; < Latin: a mist, vapor, cloud; akin to Greek nephélē cloud, German Nebel fog, haze
1655–65; < Latin: a mist, vapor, cloud; akin to Greek nephélē cloud, German Nebel fog, haze
Related forms
neb·u·lar, adjective
non·neb·u·lar, adjective
pre·neb·u·lar, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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