Content sounds like those items you would summarize in your meeting minutes. In other words, process is a description of how members behaved during the meeting. Another word used interchangeably with process is dynamics. There may be times during a team meeting when you feel you can't participate because you're not conversant with the topic being discussed. Just because you can't contribute to the content doesn't mean you can't contribute at all.
Ineffective meetings are usually the result of dysfunctional team dynamics or processes.
The entire team is responsible for the success of your meeting so all members should play an active role in facilitating healthy dynamics . If the team strikes a balance between satisfying both its task and relationship needs, it has a healthy, functional process going. Members behave in ways that facilitate getting the job done and at the same time make members feel valued, respected, included, and energized. When there is an imbalance between task and relationship need satisfaction, or not enough attention paid to either, the team's process is dysfunctional. Learning how to observe your team's process and intervene appropriately takes time and practice.