Now the fire was mutating, forming a gigantic pack of fiery beasts: Flaming serpents, chimaeras, and dragons rose and fell and rose again, and the detritus of centuries on which they were feeding was thrown up into the air into their fanged mouths, tossed high on clawed feet, before being con-sumed by the inferno.
There are no more uses of "mutate" in the book.
Show samples from other sources
The bacteria mutated and is now resistant to the antibiotic.
I’m not a scientist, but could it be mutating or something?