rete mi·rab·i·le | \ -mə̇ˈrabəˌlē \
plural retia mirabilia\ -ˌmirəˈbilēə \
Definition of rete mirabile
: a small but dense network of blood vessels formed by the breaking up of a larger vessel into branches that usually reunite into one trunk and believed especially important as an oxygen-storing mechanism in aquatic mammals
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