also: ケイか
noun, noun or participle which takes 'suru'
silicification
Technical term in geology and materials science for the process of being impregnated or replaced by silica.
この化石は珪化によって保存された。
This fossil was preserved through silicification.
木材が珪化すると、珪化木になる
When wood undergoes silicification, it becomes petrified wood.