1. (Science: anatomy, cardiology)
A term applied to vessels, nerves, ligaments, etc. The term usually denotes the arteries that supply the heart muscle and, by extension, a pathologic involvement of them. (biology-online.org)
2. Relating to or denoting the arteries that surround and supply the heart. (Google Dictionary)
Relating to or denoting a structure that encircles a part of the body (Google Dictionary); or encircling something (like a crown), especially with regard to the arteries or veins of the heart. (wiktionary.org)
Word origin: From Latin coronarius, from corona (“crown”).