From Longman Dictionary of Contemporary Englishelectrocardiographe‧lec‧tro‧car‧di‧o‧graph /ɪˌlektrəʊˈkɑːdiəɡrɑːf $ -troʊˈkɑːrdiəɡræf/ noun [countable] technical x-refan ECG(1)
Examples from the Corpus
electrocardiograph• During the entire study the subjects electrocardiograph was displayed on a monitor. 