Arabic diacritic
diacritic used in the Arabic script
Arabic nunation
type of Arabic diacritic indicating a nasalized vowel (tanwīn)
hamza
letter or diacritical mark used in Arabic-based orthographies; in Arabic, denotes a glottal stop; in Urdu, marks diphthongs
dagger alif
form of the Arabic letter alif, written as a short vertical stroke on top of another letter; indicates a long /aː/ sound; e.g. هٰذَا hādhā, رَحْمٰن raḥmān