- a small organization that becomes separated from or acts apart from an original larger group or a number of other small groups, with which it would normally be united, as because of disagreement.
- a number of members of an organization, political party, etc, who split from the main body and form an independent association, usually as the result of dissension
Idioms and Phrases with splinter group
A part of an organization that breaks away from the main body, usually owing to disagreement. For example, Perot's supporters at first constituted a splinter group but soon formed a third political party. This idiom alludes to the noun splinter, a fragment of wood or some other material that is split or broken off. [Mid-1900s]