Boundary Closure

Social Sciences Dictionary
Processes, rules, or practices that restrict access to membership, resources, roles, or status by reinforcing, formalizing, or making salient the markers that distinguish insiders from outsiders.

Boundary Closure

Religion, Spirituality & Esotericism Dictionary
Processes, rules, or practices that tighten or seal a social, ritual, doctrinal, or institutional boundary to prevent entry, influence, or recognition by outsiders and thereby preserve group integrity, identity, or authority.