plural of class struggle

(set theory) A class which is not a set.

(mathematics, topology, geometry) Any of a group of characteristic classes associated with complex vector bundles, with applications in physics, string theory, etc.

The social class of those who are educated and who perform skilled work for a living.

The practice by members of the middle class of visiting working class areas or slums out of curiosity or for entertainment. / Tourism catering to a wealthy elite (contrasted with mass tourism).

(derogatory) The privileged ruling class of bureaucrats and Communist Party functionaries that arose in states that followed the Soviet style of communism.

A tuitional class held in the evening, typically for adults, and teaching a vocational or academic subject, practical skill, or recreational pursuit.

An exercise class using stationary bicycles

(transitive, informal) To make more classy or sophisticated

(Australia, education) A separate primary-school class for teaching gifted children. / (historical, education) A separate class for teaching backward children.