Cohesion is the act or state of sticking together, or the force that holds molecules or particles of the same substance together. Learn more about cohesion in physics, botany, linguistics, and other fields, with examples and contrast with adhesion. The meaning of COHESION is the act or state of sticking together tightly; especially : unity. How to use cohesion in a sentence. Did you know? Cohesion refers to the degree to which elements within a module work together to fulfill a single, well-defined purpose. High cohesion means that elements are closely related and focused on a single purpose, while low cohesion means that elements are loosely related and serve multiple purposes. Cohesion means sticking together. If your group of friends heads to the lunchroom as a team and sits all together, you're demonstrating strong cohesion.
