compression

(kom-presh’un) (L. compre to, from comprim'ere to squeeze together]. The act of compre ing or pre ing together; an action exerted upon a body by an external power which tends to diminish its volume and augment its density. c. of the brain, a condition in which the brain is compre ed by fractures, tumors, blood clots, absce es, etc. digital c., compre ion of a blood-ve el by the fingers for the purpose of checking hemorrhage or of curing aneurysm. instrumental c., compre ion of a blood-ve el by instruments.