Aspirated consonant
Later, during the Koine Greek period, the aspirated and voiceless stops /th d/ of Attic Greek lenited to voiceless and voiced fricatives, yielding /th d/ in Medieval and Modern Greek.
The lenited Attic Greek yielded /th d/ in what periods?
Medieval and Modern Greek
Later, during the Koine Greek period, the aspirated and voiceless stops /th d/ of Attic Greek lenited to voiceless and voiced fricatives, yielding /th d/ in Medieval and Modern Greek.
/th d/