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trial case |
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case (kās) an instance of a disease. index case the case of the original patient (propositus or proband) that stimulates investigation of other members of the family to discover a possible genetic factor. In epidemiology, the first case of a contagious disease. trial case a box containing lenses, arranged in pairs, a trial spectacle frame, and other devices used in testing vision.
trial case A case containing pairs of positive and negative spherical lenses, plano cylinders, thin prisms as well as discs, pinhole discs, etc. used in refraction with a trial frame. The contents of the case are referred to as a trial set. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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