3G /ˌθriː ˈdʒiː◂/ adjective
3G technology makes it possible to have fast access to the Internet and watch videos when using a mobile phone. 3G is short for 'third generation':
a new 3G phone

[TahlilGaran] Dictionary of Contemporary English ▲

G , g /dʒiː/ noun (plural G’s, g’s)

1. [uncountable and countable] the seventh letter of the English alphabet

2. [uncountable and countable] the fifth note in the musical scale of C major or the musical key based on this note

3. [singular, uncountable] American English used to describe a film that has been officially approved as suitable for people of any age Synonym : U British English ⇒ PG

4. [countable] technical a unit for measuring the force caused by gravity on an object as it starts to move faster and faster:
Astronauts endure a force of several G’s during take-off.
high g-forces

5. [uncountable] American English a grand (=$1,000)

[TahlilGaran] Dictionary of Contemporary English ▲

g
a written abbreviation of gram or grams

[TahlilGaran] Dictionary of Contemporary English ▲

G7 /ˌdʒiː ˈsevən/
the former name of the G8

[TahlilGaran] Dictionary of Contemporary English ▲

G8 /ˌdʒiː ˈeɪt/
the Group of Eight; a group consisting of the world's eight leading industrial nations, whose government leaders and financial ministers meet regularly for discussions, especially about economic matters. Its members are: Canada, France, Germany, Italy, Japan, the UK, the US, and Russia:
the G8 summit

[TahlilGaran] Dictionary of Contemporary English ▲

0G
Zero Gravity

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲

G
General Audiences (movie rating) 
Giga- (a prefix meaning 1 billion) 
Gilbert 
Gram 
Gravitational acceleration (physics) 
Grin (used in chat and email) 
One Thousand Dollars (common US slang)

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G2
Got To

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G-10
See: Group of Ten

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G-24
Group of Twenty-Four

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G-5
See: Group of Five

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G-7
· See: Group of Seven
· Group of seven: the finance ministers and central bankers of seven leading industrial nations

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G-77
See: Group of Seventy-Seven

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