Cohesive \Co*he"sive\, a. 1. Holding the particles of a homogeneous body together; as, cohesive attraction; producing cohesion; as, a cohesive force. 2. Cohering, or sticking together, as in a mass; capable of cohering; tending to cohere; as, cohesive clay. {Cohesive attraction}. See under {Attraction}. -- {Co*he"sive*ly}, adv. -- {Co*he"sive*ness}, n.