<p><strong>Noun</strong></p><ul><li>the rate or range of occurrence or influence of something, especially of something unwanted: the high incidence of heart disease in men over 40.</li><li>a falling upon, affecting, or befalling; occurrence: The incidence of murder that Sunday afternoon shocked the sleepy village.</li><li>Optics, Physics: the striking of a ray of light, beam of electrons, etc., on a surface, or the direction of striking.</li><li>angle of incidence.</li><li>the fact or the manner of being incident.</li><li>Geometry: partial coincidence of two figures, as of a line and a plane containing it.</li></ul><p><strong>End of Response</strong></p>