Also known as: PR$, PR., PR-
PR has various meanings in the Science category. Discover the full forms, definitions, and usage contexts of PR in Science.
The normal force exerted by a homogeneous liquid or gas, per unit of area, on the wall of its container. The force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit). The force per unit area acting on a surface. A force being exerted on part of a surface. When you stand, your feet put pressure on the ground.
ScienceA device that amplifies a weak signal for subsequent processing, which may include further signal amplification. In an SMATV system, it is the amplifier mounted adjacent to an antenna to increase the strength of the signal prior to its processing at the headend.
ScienceSymbol:"Pr" Atomic Number:"59" Atomic Mass: 140.91amu. Praseodymium is one of the elements in the lanthanide series of inner transition elements. It may also be classified as a rare earth element. This soft, silvery metal can be found in many minerals and even some cigarette lighter sparking mechanisms.
ScienceTo send an SQL query to the database, to verify that it is syntactically correct, and return the result set columns. also parse.2.To convert an SQL statement from text form to an executable form. also program preparation.3.To convert an SQL statement or XQuery expression from text form to an executable form, by submitting it to the SQL and XQuery compiler.
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