generalization /jen′(ə)rəlīzā″shən/ [L, genus, kind; Gk, izein, to cause] , 1. the reasoning by which a basic conclusion is reached, with application to different items that have a common factor. 2. the process of reducing or subsuming under a general rule or statement, such as classifying items in general categories. 3. a principle with general application. 4. (in occupational therapy) the ability of a patient to apply knowledge and skills learned in therapy to a variety of similar but new situations.