The phrase "a single substantial" is correct and usable in written English.
It can be used when referring to one significant or important item, concept, or element in a discussion or analysis.
Example: "The report highlighted a single substantial finding that could change the course of the project."
Alternatives: "one significant" or "a major".
The Spanish prime minister Jose Zapatero says: "We have not let a single substantial point of the constitutional treaty go".
In the end, faced with public apathy and an opposition in disarray, the government did not have to make a single substantial concession to the privacy lobby.
BARGEMUSIC A single, substantial program is on offer this weekend, with the venue's director, the violinist Mark Peskanov, leading a crew of virtuosos in a bushel of Vivaldi concertos (including "The Four Seasons") and a new work by Igor Raykhelson.
This paper is concerned specifically with the prediction of the ultimate strength in cases where failure follows a single substantial local damage event, such as the rupture or kinking of a tow or the creation of a shear band mediated by matrix damage, without further increase in the external load.
And yet the human being is one, a single substantial unity manifested in his or her acts.
Scotus, of course, has an additional resource available, for he can deploy a formal distinction between the individual and its essence here (which would not be recognized by Ockham or Thomas), even when the individual has but a single substantial form.
He believed, however, that the rings were a single solid disk with a substantial thickness.
A single if substantial crab cake, dressed with mustard sauce and kale, costs sixty-two dollars.
President Vladimir V. Putin signed a decree on Tuesday creating a huge aviation entity, combining the nation's six major aircraft design and manufacturing companies into a single holding with substantial state control.
However, unlike what has been described for recording electrodes that create only a single penetrating injury, substantial brain tissue loss generally in the shape of a pyramidal lesion cavity was observed at the implantation site.
So what's a soccer parent to do? "What our research shows is that there appears to be a threshold" - about 1,100 or so balls headed in a single year, a substantial number -- "beyond which heading may be problematic," Dr. Lipton says.
