lithotrity Syllabification: (li·thot·ri·ty)Pronunciation: /liˈTHätrətē/Definition of lithotrity noun Surgery a surgical procedure involving the mechanical breaking down of gallstones or other calculi. Origin: early 19th century: from litho- 'of stone' + Latin tritor 'thing that rubs' + -y3lithotrity in other Oxford dictionaries Definition of lithotrity in the British & World English dictionary