(programming, rare) Computer program code characterized by several well-defined and separable layers forming a hierarchy of subsystems.

(information theory) A forward-error-correction (FEC) code for the binary erasure channel, which transforms a message of k symbols into a longer message with n symbols such that the original message can be recovered from a subset of the n symbols.

(coding theory) A rateless erasure code.

Any of a series of three-letter codes (often abbreviations) for counties and similar administrative units of the British Isles used especially in the field of genealogy

(computing) source code written in a code readable by the processor

(computing) source code that is compiled into native code for execution, rather than executing only under Microsoft's Common Language Runtime.

(computing) Source code that will execute only under Microsoft's Common Language Runtime.

(computing) Alternative form of bytecode

(computing, programming) A technique in object-oriented programming in which the visual and back-end source code are stored in separate files, allowing designers and programmers to work independently. Code-behind is a technique used in Microsoft programming platforms, including ASP.NET and XAML, where the practice is facilitated by separating the visual and code aspects through the use of partial classes.

Universal product code.