compartmentalize UK /kɒmpɑː(ɹ)tˈmɛnt(ə)laɪz/US /kəmˌpɑɹtˈmɛntəlˌaɪz/ verb1 •To separate something into different categories, or compartments.Russia and Iran see the wars against Israel and Ukraine as indelibly linked — and we in the West would be foolish to compartmentalize them. — 2024 formscompartmentalized · compartmentalizing · compartmentalizes