com ‧ part ‧ men ‧ tal ‧ ize BrE AmE ( also compartmentalise British English ) /ˌkɒmpɑːt-ˈmentl-aɪz $ kəmˌpɑːrt-/ verb [transitive]
to divide something into separate areas or groups:
Women are better than men at compartmentalizing their lives.
—compartmentalized adjective
—compartmentalization /ˌkɒmpɑːtˌmentl-aɪˈzeɪʃ ə n $ kəmˌpɑːrtmentl-ə-/ noun [uncountable]