Aphasia
Defined in 3 dictionaries — Ballentine's (1916), Bouvier (1914), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
A mental affliction whereby one loses comprehension of the sense of words and of familiar objects.
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
Loss of the power of using words properly, of comprehending them when spoken or written or of remembering the nature and uses of familiar objects. Sensory aphasia or apraxia is an inability to recognize the use or import of objects or the meaning of words, and includes word blindness and word deafness, visual and auditory aphasia. Motor aphasia is a loss of memory of the efforts necessary to pronounce words, and often includes agraphia.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In medical jurisprudence. Loss of the faculty or power of articulate speech; a condition in which the patient, while retaining intelligence and understanding and with the organs of speech unimpaired, is unable to utter articulate words or unable to vocalize the particular word which is in his mind and which he wishes to use or utters words different from those he believes himself to be speaking or (in "sensory aphasia") is unable to understand spoken or written language. The seat of the disease is in the brain, but It is not a form of insanity.