English

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Etymology

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From sectional +‎ -ize.

Verb

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sectionalize (third-person singular simple present sectionalizes, present participle sectionalizing, simple past and past participle sectionalized)

  1. (transitive) To divide into sections.
    • 1886-90, John G. Nicolay and John Hay, Abraham Lincoln: A History
      On the whole, the principal results of the struggle were, to sectionalize parties more completely, ripen Southern sentiment towards secession, and combine wavering voters in the free-States in support of Republican doctrines.
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