The Greek compound noun haimatekchysia (αἱματεκχυσία) combines haima (G129, blood) and ekchysis (pouring out). It means the shedding or pouring out of blood and appears only once in the New Testament.
Haimatekchysia appears in Hebrews 9:22 in one of Scripture's most theologically dense statements: 'Without the shedding of blood (haimatekchysias) there is no forgiveness.' This single compound word encapsulates the entire sacrificial logic of the Old Testament — from Abel's offering to the Day of Atonement — and drives forward to the cross. The cross is the ultimate, once-for-all shedding of blood that accomplishes what all prior sacrifices could only foreshadow. Hebrews 9 is an extended meditation on why Jesus's blood surpasses the blood of animals.