Adjective
polytonic
Having several tones.
Of or using the Greek system of diacritics which employs the rough and smooth breathings and the grave, acute, and circumflex accents. Replaced by the monotonic system in 1982.
From this sign later developed the sign for rough breathing or spiritus asper, which brought back the marking of the /h/ sound into the standardized post-classical ( polytonic ) orthography. Source: Internet
Modern Greek literature is usually (but not exclusively) written in polytonic orthography. Source: Internet
In the polytonic orthography of Greek, alpha, like other vowel letters, can occur with several diacritic marks: any of three accent symbols ( ά, ὰ, ᾶ main), and either of two breathing marks ( ἁ, ἀ main), as well as combinations of these. Source: Internet