verb (used with or without object), si·lic·i·fied, si·lic·i·fy·ing.
Examples from the Web for silicified
A gold mine has been worked close to the clump of silicified trees.
The silicified wood (particularly characteristic) was yet absent.
It is often silicified, and when broken shows bundles of tubular channels.The Geological Story of the Isle of Wight|J. Cecil Hughes
At Portrush, the Lower Lias is seen on the shore, crowded with ammonites, but silicified and metamorphosed by invading dolerite.
Pieces of silicified wood were frequent in the bed of the Isaacs.Journal of an Overland Expedition in Australia|Ludwig Leichhardt