Airgap

Part of speech: noun

Definitions

1. A deliberate separation between electronic systems designed to eliminate direct data flow, thereby increasing protection against potential breaches
2. A strategically imposed distance between networks or devices that obstructs any direct communication, enhancing overall security against intrusions
3. A physical or logical separation ensuring that two systems do not connect or communicate, which helps to safeguard sensitive data from unauthorized access

Etymology: The word "airgap" is a plain compound: "air" joined to "gap," so it describes a gap in which there is only air and no physical connection. In computing and security, the idea is that two networks are kept physically separate, with no cable, wireless link, or other path between them, so that data cannot pass from one to the other. The literal sense of "air" in the compound is what gives it its character. Rather than a barrier of walls or software, the separation is simply empty space, and any transfer between the systems has to be done by hand, typically by moving a disk or drive across the gap. The term is therefore a descriptive coinage from the two ordinary English words, not a borrowing or a technical term with a long history behind it.