Note:  Do not rely on this information. It is very old.


D, the fourth letter of the alphabet, derived from the Chalkidic form of the Greek delta adopted by the Romans from the Sicilian Greeks. It is probably derived from a hieroglyphic representing the triangular doorway of a tent. The Roman D is the numeral sign for 500. In music D is the second note of the natural scale.

“I keep my eyes always on the Lord. With him at my right hand, I will not be shaken.”
Psalm 16:8i