class

The definition of a class is a group of people or things with something in common.

(noun)

An example of a class is the third grade.

See class in Webster's New World College Dictionary

noun

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
☆
1. a group of students taught together according to standing, subject, etc.
2. a meeting of such a group
3. a group of students graduating together: the class of 1988
4. 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 President and the Senator were not in the same class
conscripted troops, or men liable to conscription, all of whom were born in the same year: to call up the class of 1947
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: Fr classe < L classis, class or division of the Roman people; akin to calare, to call: see clamor

transitive verb

to put in a class; classify

adjective

classification

See class in American Heritage Dictionary 4

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 level of academic development, as in an elementary or secondary school.
a. A group of students who are taught together because they have roughly the same level of academic development.
b. A group of students or alumni who have the same year of graduation.
c. A group of students who meet at a regularly scheduled time to study the same subject.
d. The period during which such a group meets: had to stay after class.
Biology A taxonomic category ranking below a phylum or division and above an order. See Table at taxonomy.
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.