IPA: /ˌɪntrəˈkɑrdɪəl/
KK: /ɪntrəˈkɑrdɪəl/
Relating to or occurring within the heart.
The doctor performed an intracardial procedure to treat the patient's heart condition.
Intracardial is formed from "intra-" (meaning within) and "cardialis" (from Latin "cor", meaning heart). The word refers to something that is located or occurring within the heart.
Think of 'intra-' meaning 'within' and 'cardial' relating to the 'heart' — this helps you remember that intracardial refers to something inside the heart.