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Popular: CC CP SS S NAP Random: IDCA 2X2 WSB WO WOZN

Meanings and definitions for SIR

What does SIR stand for? What does SIR mean?

• Sir is a respectful form of address for a man and a formal title used in the United Kingdom for knights and baronets.
• Shuttle Imaging Radar, Space
• Sion airport (code), Switzerland
• Supplemental Inflatable Restraint

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