dissension definition
Save. dissension /dÉªËsÉnÊÉn/ noun. dissension. /dÉªËsÉnÊÉn/. noun. Learner's definition of DISSENSION. [noncount] formal. : disagreement that causes the people in a group to argue about something that is important to them. The incident has caused a lot of dissension within/in the police department.