Breadcrumb Home > Dictionary > Index S speech pathology: Meaning and Definition of Find definitions for: speech' pathol"ogy Pronunciation: [key] the scientific study and treatment of defects, disorders, and malfunctions of speech and voice, as stuttering, lisping, or lalling, and of language disturbances, as aphasia or delayed language acquisition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. speech organ speechread ✖ Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language