Meanings of white fusion in English

It was decelerating at two-thirds of a gee, blue- white fusion flame spearing cleanly from its exhaust.

Through Aethra's much-degraded perception he saw the long white fusion exhaust of the third Adamist starship decelerating towards them.

I leaned out of the air lock, and we both watched the blue- white fusion tail cross between the scattered clouds.

Amid it all, the blue- white fusion tails of torchships and larger warships slicing perfectly true lines across the sky like diamond scratches on blue glass.