Term of Art: Dyscalculia

“Dyscalculia: Impairment of the ability to do arithmetic.

[From Greek dys– bad or abnormal + Latin calculare to count, from calculus diminutive of calx a stone + ia indicating a condition or quality]”

Excerpted from: Colman, Andrew M., ed. Oxford Dictionary of Psychology. New York: Oxford University Press, 2003.