He would have died if Mr. so that it sank down into denser air.

Juba came to his senses in a few moments after we entered the denser air.

And she'll handle more easily in denser air.

But the "Flying Cloud" was already descending into denser air.

The genial climate and transparent atmosphere delighted those who had come from the denser air of England.

One could similarly declare that cool, denser air sinks, both of which must happen to enable convection in the universe.

One was liberated at three miles high, but dropped with wide-open wings like a sheet of paper until denser air was reached.

This sets up a tiny pressure gradient, with slightly denser air at the back of the car and slightly thinner air at the fore.