pseudomorph

noun

1. A deceptive, irregular, or false form; specifically
2. A deceptive, irregular, or false form; specifically:

   “Petrified wood is a silicic pseudomorph of the original wood.”

   “The first kind of pseudomorphs, are pseudomorphs by alteration; the second, pseudomorphs by replacement; the third, pseudomorphs by infiltration; the fourth, pseudomorphs by incrustation.”

verb

1. To be transformed into such a form