Ḥ

Ḥ (minuscule: ḥ) is a letter of the Latin alphabet, formed from H with the addition of a dot diacritic. The letter has significance in various writing systems.

These include:

The voiceless pharyngeal fricative (/ħ/) in Arabic, some Syriac languages (such as Turoyo and Chaldean Neo-Aramaic), and oriental Hebrew (whereas Ashkenazi Israelis usually pronounce the letter Ḥet as a voiceless uvular fricative (/χ/)). This sound also exists in the Tigrinya and Somali languages, in Modern South Arabian languages and in smaller North East African languages.
Visarga, the phone [h] in Sanskrit phonology in the International Alphabet of Sanskrit Transliteration. Other transliteration systems use different symbols.
In Asturian used to represent a voiceless glottal fricative (/h/) sound in Asturian words such as Ḥou

See also