Etymology
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compartmental (adj.)

"of or pertaining to a compartment or compartments," 1831, from compartment + -al (1).

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compartmentalize (v.)

also compartmentalise, "divide or separate into compartments," 1918, from compartmental + -ize. Related: Compartmentalized; compartmentalizing.

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compartmentalization (n.)

also compartmentalisation, "act or fact of being divided into compartments," 1913, from compartmentalize + noun ending -ation.

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