Ht

HT is an initialism that can refer to several concepts across technology, geography, language, and medicine. The intended meaning depends on the context.

In computing, Hyper-Threading Technology (HT) refers to Intel’s implementation of simultaneous multithreading. It allows a single physical processor core to present two logical cores, enabling two threads to run concurrently and potentially improving throughput. HT does not double performance and its benefits vary based on workload and software. Some modern systems may enable or disable HT depending on performance and security considerations.

In geography and international codes, HT is the ISO 3166-1 alpha-2 country code for Haiti. The corresponding internet country code top-level domain is .ht. The Haitian gourde, Haiti’s currency, uses the code HTG, which is distinct from the country code but often encountered in related economic contexts.

In language coding, ht (lowercase) is the ISO 639-1 two-letter code for Haitian Creole, a language spoken in Haiti and by Haitian communities abroad.

In medicine, HT is sometimes used as shorthand for hypertension, or high blood pressure, appearing in clinical notes and some medical literature. The more common formal abbreviation for hypertension is HTN.

HT can appear in other domain-specific shorthand as well, but the above represent the most widely used meanings. When encountering HT, the surrounding context typically clarifies whether it refers to computing, a country code, a language code, or a medical term.