Micropædia

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June 30, 2026

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The Micropædia is a part of the 15th edition of the Encyclopædia Britannica, known as Britannica 3. It was designed as a ready reference and index, featuring short, specific, and unsigned articles. These articles provided brief summaries of longer pieces found in the Macropædia, which offered knowledge in depth. The Micropædia also contained index references to related content throughout the set. This structure aimed to make information accessible and easy to navigate for readers.1

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2 Britannica Sources

Encyclopædia Britannica
Encyclopædia Britannica - Fifteenth edition

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Encyclopædia Britannica
Fifteenth edition
…parts serving different functions: the Micropædia: Ready Reference and Index, Macropædia: Knowledge in Depth, and Propædia: Outline of Knowledge. The articles in the Micropædia tended to be short, specific, and unsigned and were followed (until 1985) by index references to related content elsewhere in the set. The Micropædia also included…
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…parts serving different functions: the Micropædia: Ready Reference and Index, Macropædia: Knowledge in Depth, and Propædia: Outline of Knowledge. The articles in the Micropædia tended to be short, specific, and unsigned and were followed (until 1985) by index references to related content elsewhere in the set. The Micropædia also included…
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encyclopaedia
Content arrangement
…(Propædia, or Outline of Knowledge; Micropædia, or Ready Reference and Index; and Macropædia, or Knowledge in Depth) represented an effort to design an entire set on the understanding that there is a circle of learning and that an encyclopaedia’s short informational articles on the details of matter within that circle…
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…(Propædia, or Outline of Knowledge; Micropædia, or Ready Reference and Index; and Macropædia, or Knowledge in Depth) represented an effort to design an entire set on the understanding that there is a circle of learning and that an encyclopaedia’s short informational articles on the details of matter within that circle…
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