What's the difference between petrification and silicification?

Petrification


Definition:

  • (n.) See Petrifaction.
  • (n.) Fig.: Obduracy; callousness.

Example Sentences:

  • (1) Cholesterosis of the gallbladder ist a reversible process, the petrification of cholesterol polyps is repeated observed.
  • (2) 12 of 16 patients demonstrated changes which were characteristic for hypocorticism: in 4 patients (no signs of tuberculous involvement of the adrenals) a decrease in their sizes with the preserved regular shape was noted, in 8 patients (with clinicolaboratory findings of tuberculous involvement) enlarged sizes, bilateral deformity of the contours and the presence of petrificates were detected.
  • (3) Changes in the brain matter were detected in 13 of these 15 patients: foreign bodies (2 cases), meningeal cerebral cicatrices (5), dilatation of the ventricular system (4), petrificates in the brain matter (1), atrophic changes of the cerebral cortex (1).
  • (4) The formerly feared "linear scar petrification," usual after use of Teflon felt, was absent.

Silicification


Definition:

  • (n.) Thae act or process of combining or impregnating with silicon or silica; the state of being so combined or impregnated; as, the silicification of wood.

Example Sentences:

  • (1) A model is put forward that provides for a conceptual framework for continued studies in this area, and provides testable hypotheses which should lead to a greater understanding of biomineralization processes in general and silicification in particular.
  • (2) Preliminary freeze-substitution studies have located silicon, as well as potassium and chloride, in the cell vacuole and wall deposition sites during initial silicification.
  • (3) Botanical investigations have focused on silicification of cell walls in relation to plant development, using scanning and transmission electron microscopy combined with X-ray microanalysis.

Words possibly related to "silicification"