From The Collaborative International Dictionary of English v.0.48 [gcide]:
G \G\ (j[=e])
1. G is the seventh letter of the English alphabet, and a
vocal consonant. It has two sounds; one simple, as in
gave, go, gull; the other compound (like that of j), as in
gem, gin, dingy. See Guide to Pronunciation, [sect][sect]
231-6, 155, 176, 178, 179, 196, 211, 246.
[1913 Webster]
Note: The form of G is from the Latin, in the alphabet which
it first appeared as a modified form of C. The name is
also from the Latin, and probably comes to us through
the French. Etymologically it is most closely related
to a c hard, k y, and w; as in corn, grain, kernel; kin
L. genus, Gr. ?; E. garden, yard; drag, draw; also to
ch and h; as in get, prehensile; guest, host (an army);
gall, choler; gust, choose. See C.
[1913 Webster]
2. (Mus.) G is the name of the fifth tone of the natural or
model scale; -- called also sol by the Italians and
French. It was also originally used as the treble clef,
and has gradually changed into the character represented
in the margin. See Clef. G[sharp] (G sharp) is a tone
intermediate between G and A.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
g
n 1: a metric unit of weight equal to one thousandth of a
kilogram [syn: gram, gramme, gm, g]
2: a purine base found in DNA and RNA; pairs with cytosine [syn:
guanine, G]
3: one of the four nucleotides used in building DNA; all four
nucleotides have a common phosphate group and a sugar
(ribose) [syn: deoxyguanosine monophosphate, G]
4: the cardinal number that is the product of 10 and 100 [syn:
thousand, one thousand, 1000, M, K, chiliad, G,
grand, thou, yard]
5: a unit of force equal to the force exerted by gravity; used
to indicate the force to which a body is subjected when it is
accelerated [syn: g, gee, g-force]
6: a unit of information equal to 1000 megabytes or 10^9
(1,000,000,000) bytes [syn: gigabyte, G, GB]
7: a unit of information equal to 1024 mebibytes or 2^30
(1,073,741,824) bytes [syn: gigabyte, gibibyte, G,
GB, GiB]
8: (physics) the universal constant relating force to mass and
distance in Newton's law of gravitation [syn: {gravitational
constant}, universal gravitational constant, {constant of
gravitation}, G]
9: the 7th letter of the Roman alphabet [syn: G, g]
From The Free On-line Dictionary of Computing (8 July 2008) [foldoc]:
G
1. <unit> The abbreviated form of giga-.
2. <language> ["G: A Functional Language with Generic Abstract
Data Types", P.A.G. Bailes, Computer Langs 12(2):69-94, 1987].
3. <language> A language developed at {Oregon State
University} in 1988 which combines functional programming,
object-oriented programming, relational, {imperative
programming} and logic programming (you name it we got it).
["The Multiparadigm Language G", J. Placer, Computer Langs
16:235-258, 1991].
[Jargon File]
(1996-08-12)
From Jargon File (4.4.4, 14 Aug 2003) [jargon]:
G
pref.,suff.
1. [SI] See quantifiers.
2. The letter G has special significance in the hacker community,
largely thanks to the GNU project and the GPL.
Many free software projects have names that names that begin with G.
The GNU project gave many of its projects names that were acronyms
beginning with the word "GNU", such as "GNU C Compiler" (gcc) and "GNU
Debugger" (gdb), and this launched a tradition. Just as many Java
developers will begin their projects with J, many free software
developers will begin theirs with G. It is often the case that a
program with a G-prefixed name is licensed under the GNU GPL.
For example, someone may write a free Enterprise Engineering Kludge
package (EEK technology is all the rage in the technical journals) and
name it "geek" to imply that it is a GPL'd EEK package.