“Dyslexia: An impairment in the ability to read, not resulting from low intelligence. It was first described in 1877 by the German physician Adolf Kussmaul (1822-1902), who coined the term word blindness to refer to it. See also acquired dyslexia, alexia, attentional dyslexia, catalexia, central dyslexias, cognitive neuropsychology, deep dyslexia, developmental dyslexia, neglect dyslexia, phonological dyslexia, spelling dyslexia, surface dyslexia, visual word-form dyslexia. Also called alexia, hypolexia, and word blindness. See also reading disorder, strephosymbolia. Compare hyperlexia. Dyslexic adj.”
Excerpted from: Colman, Andrew M., ed. Oxford Dictionary of Psychology. New York: Oxford University Press, 2003.