δέλτα
indecl., τό
A.
the letter δέλτα: gen. δέλτατος Democr. 20. (Hebr. dāleth 'door'.)
II.
anything shaped like a Δ, esp. island formed by the mouths of a large river, as the Nile, Hdt. 2.13, etc.; of the Indus, Str. 15.1.33, Arr. An. 5.4.1, etc.
2.
adverbially, δ. παρατετιλμέναι Ar. Lys. 151.
III.
= δελτωτόν, Ptol. Tetr. 27.