White blood cells protect the body from infection. They are much fewer in number than red blood cells, accounting for about 1 percent of your blood. The most common type of white blood cell is the neutrophil, which is the immediate response cell and accounts for 55 to 70 percent of the total white blood cell count.he blood that runs through the veins, arteries, and capillaries is known as whole blood, a mixture of about 55 percent plasma and 45 percent blood cells. About 7 to 8 percent of your total body weight is blood.
parabola in British English. See all translations. parabolanoun [ C ] uk â /pÉËrÃ¦b.Él.É/ us â /pÉËrÃ¦b.Él.É/ specialized. âº a type of curve such as that made by an object that is thrown up in the air and falls to the ground in a different place. Thesaurus: synonyms and related words. Geometry: bends, loops & curves. anfractuous.
Geometric Definition. Definition: A parabola is the set of points in the plane that are equidistant from a point (the focus) and a line (the directrix.). The following exercise should help convince you that this definition yields the parabolas you are familiar with. Exercise: Given a focus at (0,1) and a directrix y=-1, find the equation of the parabola. How to do it: draw a figure showing a generic point P on the parabola, with coordinates (x,y).