| a legal proceeding in which persons representing interests common to a large group participate as representatives of the group or class. |
| class action n. A lawsuit brought by one or more plaintiffs on behalf of a large group of others who have a common legal claim. class'-ac'tion (klās'āk'shən) adj. |
Class Action
An action where an individual represents a group in a court claim. The judgment from the suit is for all the members of the group (class).
Investopedia Commentary
This is often done when shareholders launch a lawsuit, mainly because it would be too expensive for each individual shareholder to launch their own law suit.
See also: Class