De with breve (Д̆ д̆; italics: Д̆ д̆) is a letter of the Cyrillic script. Its form is derived from the Cyrillic De (Д д) by adding a breve.
De with breve is used only in the alphabet of the Aleut language (Bering dialect), where it represents the voiced dental fricative /ð/, like the pronunciation of ⟨th⟩ in English “they” . For example, ‘ад̆аӽ’ – father, ‘чӣд̆аӽ’ – baby bird.
References
See also Cyrillic characters in Unicode