Hemostasis

Hemostasis or haemostasis is a process to prevent and stop bleeding, meaning to keep blood within a damaged blood vessel (the opposite of hemostasis is hemorrhage). 
It is the first stage of wound healing. This involves coagulation, blood changing from a liquid to a gel. Intact blood vessels are important to moderating blood's tendency to form clots.
The word "hemostasis" (, "sometimes" ) uses the combining forms "hemo-" and "-stasis", New Latin from Ancient Greek αἱμο- "haimo-" (akin to αἷμα "haîma"), "blood", and στάσις stásis, "stasis", yielding "motionlessness or stopping of blood".