increased blood flow through abundant collateral channels when the circulation through the main artery to a part is arrested.
col·lat·er·al hy·per·e·mi·a
(kŏ-lat'ĕr-ăl hī'pĕr-ē'mē-ă) Increased blood flow through abundant collateral channels when the circulation through the main artery to a part is arrested. Synonym(s): collateral hyperaemia.