The word "expository" is correct and can be used in written English.
It is used to describe a type of writing that thoroughly explains a topic and is often used in essays. Example sentence: My professor asked us to write an expository essay on the effects of climate change.
This may be an overused expository device, but there is truth in it: no person wields power over another without revealing his nature.
Still, the commute has become the chief expository site of a variant example of "Japanese exceptionalism": the notion that society in Japan is governed by subtle but unbreakable social rules, where group-think trumps the individual and automatons replace the freedom-loving and autonomous actors of the West.
The goal of neuroscience is to understand just how the brain does this, and a good expository book should do the same thing.
But too much of the opera feels expository, and the characters rarely reveal themselves naturally through song.
Full of expository dialogue and dramatic monologues that carry on a few beats too long, the play is more agitprop than art.
A standing expository difficulty is that, whereas the United Kingdom is a unitary state in international law, it comprises three major (and other minor) legal systems, those of England and Wales, Scotland, and Northern Ireland.
The historians Song Lian and Wang Shizhen and the philosopher-statesman Wang Yangming were among the dynasty's most noted prose stylists, producing expository writings of exemplary lucidity and straightforwardness.
The history of analysis in the 18th century can be followed in the official memoirs of the academies and in independently published expository treatises.
In 1770 Lagrange presented a long expository memoir on the subject to the Berlin Academy, and in 1771 Alexandre Vandermonde submitted a paper to the French Academy of Sciences.
The purest (or, at least, the most intense) literary form is the lyric poem, and after it comes elegiac, epic, dramatic, narrative, and expository verse.
Today most essays are written as expository, informative journalism, although there are still essayists in the great tradition who think of themselves as artists.
