Added 9 October 2026 ecg noun Categories: LanguageUncommon Words noun ! Definition from WordNet 3.1, Princeton University. More about ecg at Wordnik → Where our words come from → A graphical recording of the cardiac cycle produced by an electrocardiograph. Related Words: cardiogramelectrocardiogramekgeeglvhtestgceeapcgeeagefg Back to today's word