| periodic law |
(chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers
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| petrifaction |
the process of turning some plant material into stone by infiltration with water carrying mineral particles without changing the original shape a rock created by petrifaction; an organic object infiltrated with mineral matter and preserved in its original form
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| petrified |
converted into stone converted into a mineral; "petrified wood" so frightened as to be unable to move; stunned or paralyzed with terror; "petrified with fear"; "she was petrified by the eerie sound"; "too numb with fear to move"
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| Peromyscus |
New World wood mice
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| Perutz |
English biochemist (born in Austria); studied the molecular structure of blood (1914-2002)
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