| incide | To cut; to separate and remove; to resolve or break up, as by medicines. Origin: L. Incidere; pref. In- in + caedere to cut. See Concise, and cf. Incise. Source: Websters Dictionary (01 Mar 1998) |
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| incidence | 1. An act or the fact or manner of falling upon or affecting. 2. <statistics> Rate, range or amount of occurrence or influence. (18 Nov 1997) |
| incidence density | The person-time incidence rate. (05 Mar 2000) |
| incidence rate | The rate at which new events occur in a population. The numerator is the number of new events occurring in a defined period; the denominator is the population at risk of experiencing the event during this period. (05 Mar 2000) |
| incident | Going toward; impinging upon, as incident rays. Origin: L. Incido, pp. -casus, to fall into, to meet with (05 Mar 2000) |
| incident angle | <optics> The angle that a ray entering a refracting medium makes with a line drawn perpendicular to the surface of this medium, the angle that a ray striking a reflecting surface makes with a line perpendicular to this surface. Synonym: incident angle. (05 Mar 2000) |
| incident light | <microscopy> Sometimes denotes any over-stage lighting not included by methods of vertical illumination. (05 Aug 1998) |
| incident pain | <symptom> A type of breakthrough pain that is related to specific activity, such as eating, defecation, socialising or walking. Also referred to as incident pain. (16 Dec 1997) |
| incident point | The point at which a light ray enters an optical system. (05 Mar 2000) |
| incident ray | The ray that strikes the surface before reflection. (05 Mar 2000) |
| incidental | 1. Small and relatively unimportant, minor. 2. Accompanying, but not a major part of something. 3. (to something) liable to occur because of something or in connection with something (said of risks, responsibilities) (18 Nov 1997) |
| incidental colour | An obsolete term for a colour impression that remains after removal of the source. See: afterimage. (05 Mar 2000) |
| incidental learning | Learning without a direct attempt. Synonym: passive learning. (05 Mar 2000) |
| incidental parasite | A parasite that normally lives on a host other than its present host. (05 Mar 2000) |
| incidentaloma | <tumour> Mass lesion, usually of the adrenal gland, serendipitously noted during computerised tomographic examinations performed for other reasons. Origin: incidental + -oma, tumour (05 Mar 2000) |