g

from The American Heritage® Dictionary of the English Language, 5th Edition.

• abbreviation acceleration of gravity
• abbreviation gram
• noun The seventh letter of the modern English alphabet.
• noun Any of the speech sounds represented by the letter g.
• noun The seventh in a series.
• noun Something shaped like the letter G.
• noun The fifth tone in the scale of C major or the seventh tone in the relative minor scale.
• noun A key or scale in which G is the tonic.
• noun A written or printed note representing this tone.
• noun A string, key, or pipe tuned to the pitch of this tone.

from The Century Dictionary.

• In music:
• In chem.:
• In electricity, a symbol for conductance, the reciprocal of resistance. See conductance.
• An abbreviation of genitive; of German and Germany; of gram; of gulf; in a log-book, of gloomy weather.

from the GNU version of the Collaborative International Dictionary of English.

• 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, §§ 231-6, 155, 176, 178, 179, 196, 211, 246.
• (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♯ (G sharp) is a tone intermediate between G and A.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• abbreviation physics A unit of gravitational acceleration.
• noun The seventh letter of the English alphabet, called gee and written in the Latin script.
• noun The ordinal number seventh, derived from this letter of the English alphabet, called gee and written in the Latin script.
• noun The seventh letter of the basic modern Latin alphabet.
• noun Symbol for the gram, an SI unit of mass.
• noun Symbol for gravitational acceleration, approximately 9.81 m/s2 or 32 ft/sec2 at the earth's surface. Distinguished from G.
• noun Alternative form of ɡ (voiced velar stop).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a metric unit of weight equal to one thousandth of a kilogram
• noun a purine base found in DNA and RNA; pairs with cytosine
• noun a unit of information equal to 1024 mebibytes or 2^30 (1,073,741,824) bytes
• noun the cardinal number that is the product of 10 and 100
• noun the 7th letter of the Roman alphabet
• noun a unit of information equal to 1000 megabytes or 10^9 (1,000,000,000) bytes
• noun 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
• noun one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
• noun (physics) the universal constant relating force to mass and distance in Newton's law of gravitation