Loss of power of articulation, as a result of cerebral affection; spec. a form of aphasia, n., in which words are understood and conceived but cannot…

Loss of the ability to write intelligibly or to express ideas in writing, resulting from damage to certain areas of the brain; an instance of this.

Loss of speech, partial or total, or loss of power to understand written or spoken language, as a result of disorder of the cerebral speech centres.

Inability to understand or use words or signs: a form of aphasia.

Loss of the ability to comprehend written or printed language.

= agraphia, n.

A condition in which there is the loss of a musical ability, such as the comprehension of music, the production of music, or the ability to read…

Difficulty in naming objects or persons, as a form or symptom of aphasia; = anomic aphasia at anomic, adj.2 1.

Originally: a difficulty in reading or learning to read that is present from childhood. In later use: spec. a learning disability specifically…

(See quot. 1937.)

Loss or impairment of the ability to perform arithmetic calculations, resulting from injury to the brain. Cf. dyscalculia, n.

Inability to write coherently (as a manifestation of brain damage). Cf. agraphia, n.

Severe disturbance of the ability to calculate, resulting from cerebral injury.