
An example of class is this room full of children.
An example of a class is the third grade.
class

- a number of people or things grouped together because of certain likenesses or common traits; kind; sort; category
- a group of people considered as a unit according to economic, occupational, or social status; esp., a social rank or caste: the working class, the middle class
- high social rank or caste
- the division of society into ranks or castes
- a group of students taught together according to standing, subject, etc.
- a meeting of such a group
- a group of students graduating together: the class of 1988
- any group of persons that share a given year, as those elected to public office or selected for some honor
- a division or grouping according to grade or quality: as orators, the two councilors were not in the same class
- conscripted troops, or men liable to conscription, all of whom were born in the same year: called up the class of 1952
- Biol. a major category in the classification of animals, plants, etc., ranking above an order and below a division or phylum: it can include one order or many similar orders: the Latinized class names are capitalized but not italicized (Ex.: Mammalia, mammals)
- Gram. in some languages, the formal classification by which nouns are grouped according to animateness, sex, shape, and other criteria
- Informal excellence, esp. of style or appearance
Origin of class
French classe from Classical Latin classis, class or division of the Roman people; akin to calare, to call: see clamor- first-class; very good
- elegant; classy
class

noun
- A set, collection, group, or configuration containing members regarded as having certain attributes or traits in common; a kind or category.
- 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.
- 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.
- 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.
- Biology A taxonomic category ranking below a phylum or division and above an order.
- Statistics An interval in a frequency distribution.
- 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.
- Mathematics A collection of sets whose members share a specified property.
transitive verb
classed, class·ing, class·esOrigin of class
French classe from Latin classis class of citizens ; see kelə-2 in Indo-European roots.class

(countable and uncountable, plural classes)
- (countable) A group, collection, category or set sharing characteristics or attributes.
- To divide into classes, as students; to form into, or place in, a class or classes.
class - Computer Definition

Also known as custom calling services. A group of network-based services offered by local exchange carriers (LECs) through the public switched telephone network (PSTN). CLASS services include anonymous call rejection, automatic callback, calling name delivery, calling number delivery, calling number blocking, call waiting, distinctive ringing, call trace, ring again, selective call acceptance, selective call forwarding, selective call rejection, and selective call screening. For more detail, see also the preceding terms.

(1) In object technology, a user-defined data type that defines a collection of objects that share the same characteristics. An object, or class member, is one instance of the class. Concrete classes are designed to be instantiated. Abstract classes are designed to pass on characteristics through inheritance. See instantiate.
(2) In networking, a categorization of a packet based on attributes such as protocol, port and source and destination addresses.
class - Legal Definition

n
- A category of activities, objects, people, or qualities that have, or are considered to have, certain attributes or characteristics in common.
- An identifiable group of individuals that a regulation or statute deals with or acts upon differently than it does other people. If the group is identified by gender, race, national origin, or religion, such a group is called a protected class or a suspect class. See also suspect classification.
- A group of individuals who have, with the plaintiff in a civil action, a common interest in the subject, facts, and legal issues that the action is based on and who seek to collectively participate in the action so all their claims can be adjudicated in a single proceeding. For example, the passengers of a cruise ship who became ill due to the cruise line’s negligence may constitute a class.