Effusion (disambiguation)
Encyclopedia
Effusion can refer to:
- (Chemistry) EffusionEffusionIn physics, effusion is the process in which individual molecules flow through a hole without collisions between molecules. This occurs if the diameter of the hole is considerably smaller than the mean free path of the molecules...
—process of gases passing through a small hole - (Medicine)—abnormal collection of fluid in a body cavity or space, see pleural effusionPleural effusionPleural effusion is excess fluid that accumulates between the two pleural layers, the fluid-filled space that surrounds the lungs. Excessive amounts of such fluid can impair breathing by limiting the expansion of the lungs during ventilation.-Pathophysiology:...
, pericardial effusionPericardial effusionPericardial effusion is an abnormal accumulation of fluid in the pericardial cavity. Because of the limited amount of space in the pericardial cavity, fluid accumulation will lead to an increased intrapericardial pressure and this can negatively affect heart function... - (Geology) Effusion of lava in an effusive eruptionEffusive eruptionAn effusive eruption is a volcanic eruption characterized by the outpouring of lava onto the ground...
from a volcano