Definition - A speech impairment that is caused by either defective speech organs or impaired motor nerves.

Etymology -
The word was coined by combining the Greek dys, bad, with lalia, a speaking.

Oxford English Dictionary -
Its first citation is from 1878:
"The latter [lalopathia] thus includes *dysarthrias (including dyslalias and dysphasias)."
(Ziemssen's Cycl. Med. XIV. 613 )

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