pétrification - definição. O que é pétrification. Significado, conceito
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O que (quem) é pétrification - definição

CONVERSION OF BIOLOGICAL MATERIAL INTO ROCK
Petrify; Petrification; Petrified; Petrified fossils; Silicified; Petrifications
  • Tree remains]] that have undergone petrifaction, as seen in [[Petrified Forest National Park]]

petrified         
1.
If you are petrified, you are extremely frightened, perhaps so frightened that you cannot think or move.
I've always been petrified of being alone...
Most people seem to be petrified of snakes.
= terrified
ADJ: oft ADJ of n/-ing, ADJ that
2.
A petrified plant or animal has died and has gradually turned into stone.
...a block of petrified wood.
ADJ: ADJ n
petrify         
(petrifies, petrifying, petrified)
If something petrifies you, it makes you feel very frightened.
Prison petrifies me and I don't want to go there.
= terrify
VERB: V n
petrifying
I found the climb absolutely petrifying.
= terrifying
ADJ
Petrification         
·noun Fig.: Obduracy; callousness.
II. Petrification ·noun ·see Petrifaction.

Wikipédia

Petrifaction

In geology, petrifaction or petrification (from Ancient Greek πέτρα (pétra) 'rock, stone') is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals. Petrified wood typifies this process, but all organisms, from bacteria to vertebrates, can become petrified (although harder, more durable matter such as bone, beaks, and shells survive the process better than softer remains such as muscle tissue, feathers, or skin). Petrifaction takes place through a combination of two similar processes: permineralization and replacement. These processes create replicas of the original specimen that are similar down to the microscopic level.