compartmentalization

American  

[kuhm-pahrt-men-tl-ahy-zey-shuhn, kom-pahrt-] / kəm pɑrtˌmɛn tlˌaɪˈzeɪ ʃən, ˌkɒm pɑrt- /

noun

1. the act or process of dividing something into separate and isolated categories, sections, areas, or compartments: compartment.

   The camera bag is made from high-quality, strong material, and includes dividers for compartmentalization.

2. Psychology. the process of mentally separating or setting aside one’s incompatible or negative emotions, beliefs, or behaviors.

   Coping with trauma entails psychological defenses—such as denial or emotional compartmentalization—that are inherently isolating.

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Other Word Forms

• decompartmentalization noun

Etymology

Origin of compartmentalization

First recorded in 1920–25; compartmentaliz(e) ( def. ) + -ation ( def. )

Example Sentences

Passive measures include multiple remote exits, protected stair enclosures, compartmentalization, smoke-tight doors and interior linings that resist ignition and limit heat release.

From The Wall Street Journal • Jan. 4, 2026

Another ability that she doesn’t spell out, but which is impossible to ignore in the often zigzagging tone of her book, is compartmentalization.

From Slate • Aug. 19, 2024

So there was a compartmentalization that was extreme.

From Salon • May 22, 2024

The trick is grappling with constraints we have on information compartmentalization and how systems are built.

From Seattle Times • May 20, 2024

But, compartmentalization of information this extreme was beyond the normal course to which he was accustomed.

From Terminal Compromise: computer terrorism: when privacy and freedom are the victims: a novel by Schwartau, Winn