CIR

CIR may be:

• Carbon Isotope Ratio analysis.
• Committed Information Rate, a synonym for minimum guaranteed bitrate in the telecommunication business. Minimum bandwidth the SU will be delivered from the AP (Access Point) in kbit/s.
• Coordinator for International Relations, a position within the JET Programme.
• Cox-Ingersoll-Ross model for interest rate dynamics
• Consumer IR, a PS/2 keyboard serial interface implementation over infrared signals.

Cir may be:

• The standard astronomical abbreviation for the constellation Circinus