Doubled ㄷ (d)
- IPA(key): /t͈/ (alveolar plosive with tense phonation; similar to English /t/, but with a stiff glottal opening)
ㄸ • (tt)
- A digraph of hangul, the Korean alphabet.
In North Korea, the digraph is called 된디읃 (doendieut, “strong ㄷ (d)”). In South Korea, it is called 쌍디귿 (雙—, ssangdigeut, “doubled ㄷ (d)”).
In Dongguk Jeongun(東國正韻), this letter was used to transcribe voiced alveolar plosive(/d/) of Middle Chinese.