| 单词 | incidence |
| 释义 | incidence /in"si deuhns/, n. 1. the rate or range of occurrence or influence of something, esp. of something unwanted: the high incidence of heart disease in men over 40. 2. a falling upon, affecting, or befalling; occurrence: The incidence of murder that Sunday afternoon shocked the sleepy village. 3. Optics , Physics. a. the striking of a ray of light, beam of electrons, etc., on a surface, or the direction of striking. b. See angle of incidence (def. 1). 4. the fact or the manner of being incident. 5. Geom. partial coincidence of two figures, as of a line and a plane containing it. [1375-1425; late ME < LL incidentia. See INCIDENT, -ENCE] |
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