δέλτα
δέλτα
indecl., fourth letter of the Gr. alph.: as numeral, δʼ = τέσσαρες and τέταρτος, but ,δ .
δ is the medial dental mute, between the tenuis τ and the aspirate θ.
changes of δ in the dialects:
Aeolic into β, as σάμβαλον for σάνδαλον:— reversely, ὀβελός becomes ὀδελός in Doric
Aeolic or Doric into ζ, or ζ into δ and σδ, v. ζῆτα II. 2
into θ, as ψεῦδος ψύθος.
into λ, as δαήρ, Lat. levir, δάκρυ lacryma, δασύς λάσιος.
into ς, as ὀδμή ὀσμή, ἴδμεν ἴσμεν.
sometimes δ is inserted to give a fuller sound, (ἀνήρ) ἀνέρος ἀνδρός.
δ is sometimes lost, cf. διωγμός, δίωξις with ἰωκή.
it sometimes represents j. (y), as in ἤδη or δή, Lat. jam.