Encyclopedia

Class

Topics referred to by the same term

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Source updated August 25, 2026

A class is generally a group or category defined by some classification.

Class, Classes, or The Class may refer to:

Class (taxonomy), a taxonomic rank
Class (knowledge representation), a collection of individuals or objects
Class (philosophy), an analytical concept used differently from such group phenomena as "types" or "kinds"
Class (set theory), a collection of sets that can be unambiguously defined by a property that all its members share
Drug class, various pharmacological, chemical, and legal classifications of biologically active compounds
Hazard class, a dangerous goods classification
Social class, the hierarchical arrangement of individuals in society, usually defined by wealth and occupation

01Arts, entertainment, and media

"The Class" (song), 1959 single by Chubby Checker
Character class, in role-playing games and other genres
Class95, an English-language radio station in Singapore

Films

Class (film), 1983 American comedy drama movie
The Class (2007 film), Estonian drama movie
The Class (2008 film), French drama movie

Television

Class (2016 TV series), BBC science fiction drama programme, a spinoff from Doctor Who
The Class (TV series), 2006-2007 CBS sitcom
Class (2023 TV series), 2023 Indian Hindi-language Netflix crime drama thriller

Literature

Class: A Guide Through the American Status System, 1983 non-fiction book by Paul Fussell
Class (Cooper book), 1979 non-fiction book by Jilly Cooper
Class (Pacifico novel), 2014 novel by Francesco Pacifico
Class (Rosenfeld novel), 2017 novel by Lucinda Rosenfeld
The Class (Segal novel), 1985 novel by Erich Segal

02Computing

Type class, a type system construct that supports polymorphism
- Class (programming), programming construct for defining an object template
  - C++ classes, C++ language construct for defining an object template
  - Java class file, computer file containing Java bytecode
Class attribute (HTML), a feature of many HTML and XHTML elements
- Pseudo-class, cascading style sheet (CSS) construct for defining formatting
Complexity class, a set of problems of related complexity in computational complexity theory
Class (warez), a defunct group in the warez scene

03Education

Class (education), a group of students attending a specific course or lesson
Class, a course (education)
Class, a lesson or course session, in education
Classroom, a room where classes are held

04Law and government

Class, a group of people involved in a class action lawsuit
Classes of United States senators, for describing the schedules of elections for Senate seats

05Transportation

Class (locomotive), a single design of a locomotive as assigned by the railroad
Class rating, an allowance to fly aircraft of similar design
Railroad classes in the United States
Ship class, a group of ships of similar design
Travel class, a quality of accommodation on public transport
Vehicle size class, a way of classifying cars

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Sources and credits

This article is adapted from the Wikipedia article “Class”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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