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dyslexia
dys·lex·i·a [ diss léksee ə ]


noun 
Definition:
 
impaired ability to understand written language: a learning disorder marked by a severe difficulty in recognizing and understanding written language, leading to spelling and writing problems. It is not caused by low intelligence or brain damage.
[Late 19th century. <dys- + Greek lexis "speech" < legein "speak"]

dys·lex·ic adjective, noun
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