class

a  [count] : a group of students who meet regularly to be taught a subject or activity

◊ In U.S. English, class is used with a singular verb.

• The class is going on a field trip.

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◊ In British English, class can also be used with a plural verb.

• The class are going on a field trip.

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b  [count] : a series of meetings in which students are taught a particular subject or activity : a course of instruction

c  : one of the meetings in which students are taught a particular subject or activity

d  [count] US : a group of students who finish their education at a particular school at the same time : students who graduate together

a  [count] : a group of people in a society who are at the same economic and social level — often used before another noun

b  [noncount] : the way people in a society are divided into different social and economic groups

a  : a quality that makes something or someone seem special and attractive — see also first-class, high-class, world-class

b  : a quality that makes someone seem very good, kind, etc. — see also class act, classy

a  : a group of people or things that are similar in some way

◊ If you are in a class by yourself or in a class of your own, you are very different from others in a good or bad way.

• There have been a lot of corporate scandals but this one is in a class by itself. [=worse than all the others]
• As an architect, she is in a class by herself. [=she has exceptional talent as an architect]

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b  : one of the sections of seats on an airplane, train, etc. — see also first class, second class, third class, tourist class

[count] British : one of the levels of a university degree

: to decide that (someone or something) belongs to a particular group : classify — usually used as (be) classed — often + as