C2

C2 stands for:

• The highest language proficiency level within the framework of the Common European Framework of Reference for Languages

C-2 stands for:

• Grumman C-2, a twin-engine transport aircraft for the U.S. Navy

C.2 stands for:

• ACAZ C.2, a Belgian manufacturer ACAZ biplane

Stands for:

• The cyclic group of degree 2 in mathematics

• Disambiguation
• Abbreviation