The term subarachnoid hemorrhage (SAH) refers to extravasation of blood into the subarachnoid space between the pial and arachnoid membranes. SAH constitutes half of all spontaneous atraumatic intracranial hemorrhages; the other half consists of bleeding that occurs within the brain parenchyma.
Definitions and images to illustrate geological terms, links to images and website articles. Assimilation is that process of magmatic differentiation whereby ascending magmas evolve chemically by recruiting easily melted or dissolved components (fusibles) from the walls of their conduits. Under the agency of heat and magmatic fluids, ascending magmas pick up volatiles, silica, trace elements, and occassionally fragments of wall rock.
the act or process of assimilating, or of absorbing information, experiences, etc.: the need for quick assimilation of the facts. 2. the state or condition of being assimilated, or of being absorbed into something. 3. the process of adapting or adjusting to the culture of a group or nation, or the state of being so adapted: assimilation of immigrants into American life.