cardia

< /ˈkɑr diˌi/, car·di·as. Anatomy.

1. an opening that connects the esophagus and the upper part of the stomach.

1. a combining form occurring in compounds that denote an anomalous or undesirable action or position of the heart, as specified by the initial element: dextrocardia; tachycardia.

n. pl. car•di•as

1. The opening of the esophagus into the stomach.
2. The upper portion of the stomach that adjoins this opening.