Home›Dictionary›myocardialmyocardialadjectiverelating to heart muscleL37710 on Wikidata ↗WiktionaryPronunciation: /maɪəʊˈkɑːdi.əl/ / /maɪoʊˈkɑɹdi.əl/adjRelating to the myocardium, the thick muscular wall of the heart.