Noun:

கல்லாக மாற்றுதல்,

petrifaction's Usage Examples:

, preserved in the fossil woods, but the best specimens are probably those in amber and in siliceous petrifactions of more recent origin.

petrifaction mania with a delicate, a very delicate satire.

By the ancients and the earlier naturalists of the Christian era they were regarded either as petrifactions or as plants, and many supposed that they occupied a position midway between minerals and plants.

It was the very aim of Hegelianism to render fluid the fixed phases of reality - to show existence not to be an immovable rock limiting the efforts of thought, but to have thought implicit in it, waiting for release from its petrifaction.

Thus, for example, there is the " Rock Garden," which should consist of variously grouped masses of large stones, those which are remarkable for being figured by water-wearing, or containing petrifactions or impressions, or showing something of natural stratification, being generally preferred.

This second method of fossilization is termed petrifaction.

Although some information as to minute structure may often be gleaned from the carbonaceous coating of impressions, the fossils preserved by petrifaction are the main source of our knowledge of the structural characters of ancient plants.

The chemical bodies which have played the most important part as agents of petrifaction are silicic acid and calcium carbonate, though other substances, such as magnesium carbonate, calcium sulphate and ferric oxide have also been concerned, either as the chief constituents of petrifac tions, or mixed with other bodies.

Synonyms:

rock, stone,

Antonyms:

artifact, bad person, achromatic,