hematosis

[ hee-muh-toh-sis, hem-uh- ]
/ ˌhi məˈtoʊ sɪs, ˌhɛm ə- /

noun

Physiology. the conversion of venous into arterial blood; oxygenation in the lungs.

Origin of hematosis

From the New Latin word haematosis, dating back to 1690–1700. See hemato-, -sis