The phrase "a single air" is correct and usable in written English.
It can be used in contexts where you want to refer to one specific atmosphere, feeling, or quality associated with something.
Example: "The room had a single air of elegance that captivated everyone who entered."
Alternatives: "one distinct atmosphere" or "a unique ambiance".
"Not a single air frame was guaranteed in the settlement offer," he said.
A single air bubble is trapped under the waterlogged screen like a ball bearing in a puzzle.
The Palestinian Centre for Human Rights said another 10 people were killed in a single air strike in Rafah, including four young children and a baby.
"The United States Postal Service will gain a single air transportation provider for most of its express and priority mail," said Frederick W. Smith, president of FedEx.
How much easier it is today than it was during the first world war to destroy an entire metropolis in a single air raid?
In total, twenty-eight of Yasser's relatives had been killed, the most in a single air strike in this war so far.
Representatives of the 15 European Union nations and the European Parliament have hammered out an agreement to create a single air-traffic space.
The transportation commissioner, Ms. de Palacio, also outlined a new proposal today for a single air-traffic agreement for the European Union.
Naturally, it would benefit the global auto industry to select one common refrigerant for all markets, making it possible to build a single air-conditioning system for domestic and export models.
Paulistanos (residents of São Paulo) greet each other with a single air-kiss; residents of Amazonia run more to bear-hugs.My original examples and readers' suggestions, some of which I've collated below, turned out to fall naturally into three groups.
That was followed by news that the western state of Goa had given 2 million rupees, or $35,700, to build a single air-conditioned toilet in the constituency of the former chief minister of the state.
