Gettysburg Syllabification: (Get·tys·burg)Pronunciation: /ˈgetēzˌbərg, -iz-/Definition of Gettysburg a historic agricultural and commercial borough in south central Pennsylvania, scene of a critical Civil War battle in July 1863; population 8,040 (est. 2008). Gettysburg in other Oxford dictionaries Definition of Gettysburg in the British & World English dictionary