dyslexia /dislek″sē·ə/ [Gk, dys + lexis, word] , an impairment of the ability to read, as a result of a variety of pathological conditions, some of which are associated with the central nervous system. Dyslexic persons often reverse letters and words, cannot adequately distinguish the letter sequences in written words, and have difficulty determining left from right. Compare alexia. −dyslexic, adj.
