He tells them to scan for dikironium and immediately fire at anything that looks like a gaseous cloud.

Where it hit the fires, enormous gaseous clouds formed, roiled, and expanded.

Merchant ship, military ship-vanished, only gaseous clouds to mark their passing.

The momentum of its rush, combined with the sudden gaseous cloud, sent Catti-brie moving backward, past the dwarf and into the water.

The gaseous clouds cleared away, leaving a stretch of roof that had a flame-reddened background.

Instead, the moon is made up of colorful nebulaes, gaseous clouds, and floating rock islands in the sky.

If you see any gaseous cloud, fire into it instantly.

But the gaseous cloud was gone.

It seemed endless, a slick tunnel of moving liquid, shining like a gaseous cloud, a pipe into the Earth without up, down or escape.

Then a star grew from it, hurling forth a gaseous cloud.