The phrase "a single gathering" is correct and usable in written English.
You can use it to refer to one specific event or meeting where people come together.
Example: "The conference will be a single gathering of experts from various fields to discuss the latest advancements in technology."
Alternatives: "one meeting" or "a solitary assembly".
The Democrats welcomed the gesture, though it was clear that a single gathering would not erase years of distrust.
While individual families had already had services for their loved ones, this was an opportunity to remember all of the victims in a single gathering.
In a single gathering, Trump could introduce himself to the Muslim world, reëstablish America's relationship with Saudi Arabia, put Iran on notice, and communicate to everyone present how the Administration felt about M.B.S. "The whole establishment was opposed to it State, D.O.D., Treasury, everyone," the former defense official said.
The fifty-eight pages are sewn in a single gathering and bound with a sheet of old vellum, which is now partially discolored from use.
We attempted to take only a single gathering of each species that was evidently different except where the specimens represented different floral or fruit stages.
When Jen met Peter a singles gathering, she enjoyed talking with him.
I don't have any hard facts on that, and they'd be pretty much impossible to gather, but if you think of every single gathering of people for a purpose, I reckon you can call that an event.
The single gathering, to which usually a unique 'field number' or 'collecting number' is assigned, is a data object termed 'field unit' (35).
This vast array of specific reforms can't be achieved at a stroke, and certainly not at a single party gathering.
Considering the case of a single cluster gathering all the detections: EP = max j | GT j | N ( noted EP min ) and GTP = 1.
From May 19 to 21, Damascus will stage what has become probably the largest single gathering of hikers anywhere: an annual festival called Trail Days.
