HAC

Hac is a term with multiple meanings, depending on context. In Turkish, hac or hacı is associated with the title given to a person who has completed the pilgrimage to Mecca (the hajj). The spelling "Hac" can be seen as a transliteration variant and may appear in names or historical references. In other uses, HAC is an acronym that stands for several distinct concepts across different fields.

Hospital-Acquired Condition refers to a medical complication that arises during a hospital stay and is considered preventable. It is used in health policy and hospital quality reporting to track patient safety and drive improvements in care.

High-Availability Cluster describes a configuration of computer systems and software designed to minimize downtime and provide continuous service. HACs are common in enterprise IT, data centers, and cloud environments where reliability is critical.

Human–Animal Conflict denotes conflicts between humans and wildlife or domestic animals, frequently addressed in conservation, land-use planning, and wildlife management. Strategies to mitigate HAC include habitat management, compensation programs, and community engagement.

In addition, HAC can appear as an organization name, project code, or other identifier in various languages and regions, making its meaning highly context-dependent. Because HAC is an acronym and "Hac" also functions as a name or title, clarifying the domain, language, or location is essential to determine the intended sense.