IPA: /ˌɪntrəˈkɑrdɪəli/
KK: /ɪntrəˈkɑrdɪəli/
In a manner that occurs within the heart.
The medication was administered intracardially to ensure it reached the target area quickly.
Intracardially → It is formed from "intra-" (meaning within) and "cardia" (from Greek "kardia", meaning heart) and the suffix "-ly" (meaning in a manner). The word "intracardially" refers to something occurring within the heart.
Think of 'intra-' meaning 'within' and 'cardia' meaning 'heart' — so intracardially means something happening within the heart.