Macropædia

The 17-volume Macropædia is the third part of the Encyclopædia Britannica; the other two parts are the 12-volume Micropædia and the 1-volume Propædia. The name Macropædia is a neologism coined by Mortimer J. Adler from the ancient Greek words for "large" and "instruction". Adler's intention was that the Macropædia serve students who wish to learn a field in depth; for comparison, the short articles of the Micropædia are intended for quick fact-checking.