asthenopia

[as-thuh-noh-pee-uh]

as·the·no·pi·a

[as-thuh-noh-pee-uh]
noun Ophthalmology.
a fatigue or tiring of the eyes, usually characterized by discomfort, dimness of vision, and headache, caused by overuse of the visual organs, dysfunction of the ocular muscles, and incorrect refraction.

Origin:
< Greek asthen(ḗs) frail (see asthenia) + -opia

as·the·nop·ic [as-thuh-nop-ik] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Asthenopia has a plethora of syllables.
So is sesquipedalianism. Does it mean:
given to using long words.
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
Collins
World English Dictionary
asthenopia (ˌæsθɪˈnəʊpɪə)
 
n
a technical name for eyestrain
 
[C19: from New Latin, from Greek asthenēs weak (from a-1 + sthenos strength) + ōps eye]
 
asthenopic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

asthenopia as·the·no·pi·a (ās'thə-nō'pē-ə)
n.
See eyestrain.


as'the·nop'ic (-nŏp'ĭk) 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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