| class   (klăs) 
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              Tweet n. 1.  A set, collection, group, or configuration containing members regarded as having certain attributes or traits in common; a kind or category. 2.  A division based on quality, rank, or grade, as: a.  A grade of mail: a package sent third class. b.  A quality of accommodation on public transport: tourist class. 3.  a.  A social stratum whose members share certain economic, social, or cultural characteristics: the lower-income classes. b.  Social rank or caste, especially high rank. c. Informal   Elegance of style, taste, and manner: an actor with class. 4.  a.  A group of students who are taught together, usually at a regularly scheduled time and in the same subject. b.  The period during which such a group meets: had to stay after class. c.  The subject material taught to or studied by such a group: found the math class challenging.  d.  A group of students or alumni who have the same year of graduation. 5. Biology   A taxonomic category ranking below a phylum or division and above an order. 6. Statistics   An interval in a frequency distribution. 7. Linguistics   A group of words belonging to the same grammatical category that share a particular set of morphological properties, such as a set of inflections. 8. Mathematics   A collection of sets whose members share a specified property. tr.v.  classed, class·ing, class·es   To arrange, group, or rate according to qualities or characteristics; assign to a class; classify. [French classe, from Latin classis, class of citizens; see  kelə-2 in the Appendix of Indo-European roots.] | 
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