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.
Prostaglandins as hormones. Shimizu N, Nakamura T. In recent years, the concept of a hormone has been greatly changed, and the term 'cybernin' is used to describe a substance which possesses not only endocrine activity but also has autocrine and paracrine effects.owever, the metabolic degradation of prostaglandins is rapid and their significance as circulatory hormones has not been clarified. Yet it is clear that prostaglandins have important physiological activity and it is possible that the effects of prostaglandins are mediated by paracrine or autocrine mechanisms.