ghunna
Ghunna is a term used in Tajweed, the rules of Quranic recitation, referring to a nasal sound produced from the nose. It is a specific phonetic quality that accompanies certain Arabic letters. The primary letters associated with ghunna are the letter noon (ن) and the letter meem (م) when they carry a shaddah (a diacritical mark indicating doubling). It is also present in specific grammatical contexts for noon and meem, such as when they are followed by certain other letters in particular Tajweed rules.
The ghunna is not a separate letter but rather a characteristic of the sound of noon and