fourth letter of the Roman alphabet, from Greek delta, from Phoenician and Hebrew daleth, pausal form of deleth "door," so called from its shape. The sign for "500" in Roman numerals. 3-D for "three-dimensional" is attested from 1953.
d- pref.
Relating to the configuration of d-glyceraldehyde, a compound chosen as the basis for stereochemical nomenclature because it is the simplest carbohydrate that can form optical isomers: d-fructose.
D 1
The symbol for the isotope deuterium.
D 2
abbr.
dexter
diffusing capacity
dead space
D. abbr.
diopter
dose
d- pref. d-
To the right; dextro: d-tartaric acid.
d Abbreviation of diameter |
1. "The Data Language." MS-DOS 4GL.
2. A Haskell-like language, with type classes.
E-mail: