What was the primary profession of the person who coined the phrase Micropædia?
Micropædia:  The name "Micropædia" is a neologism coined by Mortimer J. Adler from the ancient Greek words for "small" and "instruction"; the best English translation is perhaps "brief lessons". Mortimer J. Adler:  As a philosopher he worked within the Aristotelian and Thomistic traditions.
philosopher