Akademik

diacritical mark
noun
a mark added to a letter to indicate a special pronunciation
Syn: ↑diacritic
Derivationally related forms: ↑diacritic (for: ↑diacritic), ↑diacritical (for: ↑diacritic)
Hypernyms: ↑mark
Hyponyms:
accent, ↑accent mark, ↑breve, ↑cedilla, ↑circumflex, ↑hacek, ↑wedge, ↑macron, ↑tilde, ↑umlaut, ↑dieresis, ↑diaeresis

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diacritical mark, diacritical point, or diacritical sign,
a mark placed over, under, or attached to a letter to indicate pronunciation, stress, accent, or other value.

Useful english dictionary. 2012.