D

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z

The fourth letter of the latin alphabet. The Semitic letter Dâlet probably developed from the logogram for a fish or a door. In Semitic, Ancient Greek (Modern Greek /ð/) and Latin the letter was pronounced /d/, in the Etruscan alphabet the letter was superfluous but still maintained (see letter B). Greek letter: Δ (capital) or δ (small) (Delta).

In Cantonese, the sound /d/ means a little bit. Since it corresponds to no traditional Chinese character, residents of Hong Kong invented a new character 啲 (which isn't supported in many Chinese systems) or simply write D instead.

In context, D is also:

• The symbol of deuterium, an isotope of hydrogen.
• A musical note
• The Roman numeral for 500
• The stock symbol for Dominion Resources Inc. VA[?]
• A standard size dry cell battery.
• a programming language; see D programming language.