Precedence is a simple ordering, based on either importance or sequence; it may refer to one of the following:

• SPECT/CT scanner from Philips
• Message precedence of military communications traffic
• Order of precedence, the ceremonial hierarchy within a nation or state
• Order of operations, in mathematics
• Precedence Entertainment, a defunct publisher of several collectible card games

• Precedent, a legal case establishing a principle to be adhered to in subsequent rulings

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