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(countable) A group, collection, category or set sharing characteristics or attributes.
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(sociology, countable) A social grouping, based on job, wealth, etc. In Britain, society is commonly split into three main classes: upper class, middle class and working class.
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(uncountable) The division of society into classes.
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(uncountable) Admirable behavior; elegance.
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(education, countable and uncountable) A group of students in a regularly scheduled meeting with a teacher.
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A series of lessons covering a single subject.
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A single lesson in a series.
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(countable) A group of students who commenced or completed their education during a particular year. A school class.
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(countable) A category of seats in an airplane, train or other means of mass transportation.
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(taxonomy, countable) A rank in the classification of organisms, below phylum and above order; a taxon of that rank.
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Best of its kind.
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(statistics) A grouping of data values in an interval, often used for computation of a frequency distribution.
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(set theory) A collection of sets definable by a shared property, especially one which is not itself a set (in which case the class is called proper).
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(military) A group of people subject to be conscripted in the same military draft, or more narrowly those persons actually conscripted in a particular draft.
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(object-oriented programming, countable) A set of objects having the same behavior (but typically differing in state), or a template defining such a set in terms of its common properties, functions, etc.
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One of the sections into which a Methodist church or congregation is divided, supervised by a class leader.