conversion

In programming languages, the transformation between values that represent the same data item but belong to different data types. Information may be lost because of conversion since accuracy of data representation varies among different data types. (I).
The process of changing from one method of data processing to another or from one data processing system to another. IBM.
The process of changing from one form of representation to another; for example to change from decimal representation to binary representation. IBM.
A change in the type of a value. For example, when you add values having different data types, the compiler converts both values to a common form before adding the values.