The beginning of the amazing events at Krakatoa in 1883 date to May 20 when there were initial rumblings and venting from the volcano, which had been dormant for about 200 years.
A refinery margin is the revenue associated with refining petroleum, expressed as a value per volume (e.g. $/L), net of the cost of the crude oil input. The simplest refining
Medical Definition of margination. 1  1: the act or process of forming a margin; specifically : the adhesion of white blood cells to the walls of damaged blood vessels. 2  2: the action of finishing a dental restoration or a filling for a cavity margination of an amalgam with a bur.