vasa vasorum

Etymology
From the, plural of + , the genitive plural of. Meaning "vessels of the vessels."

Noun

 * 1)  The capillaries that supply blood to vessels larger than 1 mm. They supply blood to the adventitia and middle tunicae.

Usage notes
Singular forms include "vasa vasis" and "vas vasis".

Translations

 * Finnish: suonenseinämäsuonet