dyscalculia

[dis-kal-kyoo-lee-uh]
noun

Origin:
1950–55; dys- + calcul(ate) + -ia

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Collins
World English Dictionary
dyscalculia (ˌdɪskælˈkjuːlɪə)
 
n
severe difficulty in making simple mathematical calculations, due to cerebral disease or injury
 
[C20: from dys- + Latin calculare to calculate]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

dyscalculia dys·cal·cu·li·a (dĭs'kāl-kyōō'lē-ə)
n.
Impairment of the ability to solve mathematical problems, usually resulting from brain dysfunction.

The American Heritage® Stedman's Medical Dictionary
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Example sentences
And perhaps dyscalculia will collect a penumbra of dubious cases around it, as dyslexia has.
The authors define dyscalculia and describe its major subtypes.
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