For Arms we have terms and definitions in 5 topics. The topics are Colon Cancer, EU Aerospace Acronyms, Financial, Flight Regulations Acronyms and Heraldry.

Clinical trials can include multiple "arms." Each arm is a study group of patients receiving a specific treatment or combination of treatments that is being compared to other treatment arms as well as to the control arm. The "control arm" is the best available standard treatment.
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Aircraft R&M Simulation
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See Adjustable Rate Mortgages. See Adjustable Rate Mortgages.
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Aviation Resource Management Survey
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Arms or Armories were so called because originally displayed upon defensive arms, and coats of arms because formerly embroidered upon the surcoat or camis worn over the armor. The term coat of arms, once introduced, was afterward retained, even when displayed elsewhere than on the coat. In the days when knights were so encased in armor that no means of identifying them was left, the practice was introduced of painting their insignia of honor on their shield as an easy method of distinguishing them. Originally these were granted only to individuals, but were afterward made hereditary by King Richard I, during his crusade to Palestine. They may be divided into two general classes: (1) Public, as those of kingdoms, provinces, bishoprics, corporate bodies, etc. And (2) private, being those of private families. These two classes are again separated into many subdivisions, founded mainly on the different methods by which they were granted.
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