It is shown thus: Δ is the capital, and δ is the small version. The Greek name is "dhelta", "dh" representing the English "th" sound in the word "the". It always has this pronunciation in Greek and is never pronounced "d". | It is shown thus: Δ is the capital, and δ is the small version. The Greek name is "dhelta", "dh" representing the English "th" sound in the word "the". It always has this pronunciation in Greek and is never pronounced "d". |