from The Century Dictionary and Cyclopedia
- n. A gilding process in which the gold is put on in the form of an amalgam of gold and mercury, and then heated in a muffle. The mercury escaping leaves a film of gold.
Sorry, no etymologies found.
The doors became Ghiberti's life's work, since the casting and fire-gilding of the two sets of doors took him to within two years of his death.