Fluid Around the Lungs â Types and Causes of Pleural Effusions. A pleural effusion is when fluid accumulates in the pleural space around the lungs. It is commonly referred to as fluid in the lungs or water surrounding the lungs but should not be confused with pulmonary edema which is fluid in the lungs. Depending on the severity, it may compress the lung and impair breathing. Mild effusions may be asymptomatic and only detected upon radiographic investigation (x-ray, CT scan).
Plane trigonometry is a branch of mathematics that focuses on the relationship between the sides and angles of a triangle. Plane trigonometry builds upon the basic concepts of Euclidean geometry, and it has applications in a variety of mathematical fields, from physics to advanced calculus. Keep Learning.
The term trigonometry was derived from the Greek word ÏÏÎ¹Î³ÏÎ½Î¿Î¼ÎµÏÏÎ¯Î± (trigonometria), meaning triangle measuring, from ÏÏÎ¯Î³ÏÎ½Î¿ (triangle) plus Î¼ÎµÏÏÎµá¿Î½ (to measure). Our modern word sine is derived from the Latin word sinus, which means bay, bosom or fold, translating Arabic jayb. The Arabic term is in origin a corruption of Sanskrit jÄ«vÄ, or chord. Sanskrit jÄ«vÄ in learned usage was a synonym of jyÄ chord, originally the term for bow-string.