Etymology 1

From Etruscan , from Greek , from Phoenician .

Letter

1. The fourth letter of the basic modern Latin alphabet.

Etymology 2

A simplification of under the graphic influence of the letter D, from a standardization of superposed on a ⋌ or ⊢, from the practice of circling each hundredth ⋌ (now Roman numeral V), the tally stick notch mark representing five.

Numeral

1. cardinal number five hundred (500).

Etymology 3

abbreviation of From its position as the thirteenth element of the series {1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F} abbreviation of German word

Symbol

1. Deuterium, when it needs to be distinguished from ordinary hydrogen.
2. Hexadecimal symbol for thirteen.
3. A standard size of dry cell battery larger than C.
4. Vehicle-distinguishing sign for Germany.
5. IUPAC one-letter abbreviation for aspartic acid.
6. The differential operator in calculus and analysis.