The word "stethokyrtograph" is quite a mouthful, and it is not a commonly used word. The word is spelled "STETH-o-KYR-tuh-graf" with the accent on the second syllable. It refers to a medical instrument used to record the sounds made by the heart and blood vessels. The spelling of the word can be explained using the International Phonetic Alphabet (IPA) as /ˌstɛθəʊˈkaɪrtəɡrɑːf/. Despite its complex spelling, the stethokyrtograph has been a valuable tool in the study of cardiovascular diseases.
Stethocyrtograph.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.