The phrase "a single essay" is correct and usable in written English.
It can be used when referring to one specific essay, often in contexts discussing assignments, writing tasks, or academic work.
Example: "For this assignment, you are required to submit a single essay on the topic of climate change."
Alternatives: "one essay" or "a solitary essay".
Such issues can't be settled in a single essay.
For a single essay, we could be expected to read three novels as well as vast amounts of other reading.
Oftentimes, I'll take ideas to Twitter that I would not prefer to present in a single essay or article.
He was an incisive, sometimes dizzyingly erudite writer about his own work and that of others, sweeping from Egyptian funerary practices to Penthouse letters in the space of a single essay.
Sample passages from a suspect work -- which can range in size from a single essay to an entire book -- are scanned into a computer, which, following the Cloze procedure, removes every fifth word.
Thus, in a single essay, Gould coalesces a mass of personal obsessions: his family history, his New York origins, the dangers of misinterpreting scientific theory and a deep appreciation of the fragility of life.
At first, the young critic, renowned in left-leaning Weimar literary circles, hoped to complete a single short essay, to be called "Parisian Arcades: A Dialectical Fairyland".
The resulting book, "The Faith of Graffiti," appeared the following year, with a few dozen beautiful images by Naar and a single beautiful essay by Mailer that included such musings as: Talking to CAY 161.
The way they are displayed — printed the same paperback book size and in identical black frames — has the effect of absorbing the many disparate images into a single photographic essay on the American social landscape.
Unfortunately, many discussions of Hume's aesthetics concentrate on a single late essay, "Of the Standard of Taste" (1757).
One would think that since those murals of rebellion -- as graffiti usually are -- were right there in open view, the filmmaker who simply captured them in a single cinematic essay would not have done anything wrong..
