The phrase "a single paragraph or" is correct and usable in written English.
It can be used when discussing the length or format of a written piece, indicating that it may consist of just one paragraph or something else.
Example: "For this assignment, you can submit a single paragraph or a more detailed essay, depending on your preference."
Alternatives: "one paragraph or" or "a solitary paragraph or".
Depending on how he arranges them, they evoke different feelings, different interpretations, and it is these that interest him, more than the events themselves; when telling his story, he often glides over long periods in a single paragraph or selects one tiny incident, dispensed with in a sentence or two, as a jumping-off point for long passages of reflection.
A single paragraph or a dozen?
It's better to start and commit to a single paragraph or even a single sentence!
Start by sending me a single paragraph from you or your organization and I will assemble them so that we are all heard as one voice".
People happily browse the web through a tiny, inadequate window like an iPhone (pathetically, the best mobile browsing experience) showing a single paragraph at a time, or one figure, or a photo so small that none but the coarsest features can be discerned.
Cohn, racked with guilt and rolling in cash, spent three years laboring on a single paragraph.
[n10] Third, The Nation paraphrased nothing approximating the totality of a single paragraph, much less a chapter or the work as a whole.
For a game like Angry Birds, for instance, Amazon's merchandisers explain its narrative in great detail, compared with a single paragraph on the Android Market — or, for that matter, competing app stores like AppBrain and GetJar.
When he was studying for his doctoral degree at Columbia University in the mid-1970's, Rabbi Ellenson recalled, one of his professors, Arthur Hertzberg, remarked that if a person could not sum up his point in a sentence or a single paragraph, then that person probably did not really know what he wanted to say.
Don't write too vague or general an idea or you will never be able to discuss it in a single paragraph.
