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.
Renin is a peptide hormone secreted by the kidneys. It functions in the renin-angiotensin system (RAS) which regulates extracellular fluid volume and arteriol blood pressure.As with other peptide hormones, the production and secretion of renin is tightly regulated by physiological processes within the body.fter renin is released from the kidney, it breaks down angiotensinogen into angiotensin I. This peptide is then broken down further into angiotensin II, which acts as a vasoconstrictor narrowing the blood vessels.