radÂ·iÂ·cal. (rÄdâ²Ä­-kÉl) adj. 1. Arising from or going to a root or source; basic: proposed a radical solution to the problem. 2. Departing markedly from the usual or customary; extreme or drastic: a radical change in diet.
rlogin (remote login) 1  Securing VMware Virtual Infrastructure with Centrify's Identity and Access  ... Rlogin (remote login) is a UNIX command that allows an authorized user to login to other UNIX machines (hosts) on a network and to interact as if the user were physically at the host computer.
prostacyclin /prosÂ·taÂ·cyÂ·clin/ (prosâ³tah-siÂ´klin) a prostaglandin, PGI2, synthesized by endothelial cells lining the cardiovascular system; it is a potent vasodilator and inhibitor of platelet aggregation. It is used pharmaceutically as epoprostenol. prostacyclin (prÅsâ²tÉ-sÄ«â²klÄ­n) n. A prostaglandin produced in the walls of blood vessels that acts as a vasodilator and inhibits platelet aggregation. prostacyclin (PGI2) [prosâ²tÉsÄ«â²klin] a prostaglandin. It is a biologically active product of arachidonic acid metabolism in human vascular walls and a potent inhibitor of platelet aggregation.