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noun.
1) an acronym for the brand name ‘nitrous oxide systems’. nos produces a chemical known as nitrous oxide, often used in the performance optimization of car and motorcycle engines. the chemical (n2o) breaks up upon contact with air, releasing extra oxygen into the engine. this often means that oxygen detectors in modern cars pick up the extra oxygen and add more fuel to the a/f mixture. this means the engine will pack a harder punch than it typically would, in the form of an instant flywheel horsepower gain.
2) a buzzword used by the illegal street racing comunity (often populated by rice burners), to make one’s car sound fast. many misconceptions have arisen from the term nos, particularily founded by the film ithe fast and the furious/i. one misconception is that nos can be installed on any car, and with the push of a b-tton it will result in an exponential gain in speed. another is that nos iis/i nitrous oxide; nos is only a brand name. nitrous oxide can only be installed on some engines, and does not necessarily mean a huge gain in speed. it is not activated with the push of a b-tton, most nitrous systems have a throttle trip system that activates the nitrous flow at wot (wide-open-throttle), in order to maximize potential speed. another widely mentioned misconception is that nitrous oxide is flammable. it is not. though any compressed gas can explode when heated, the gas itself is non-flammable.
typical rice-boy: “yo, i gotz da nos in ma civic, i’ll waste yo shiznit on da quota-mile.”
nos is the acronym for new old stock. it’s an item that is old, but ios not used. since it never sold, it’s technically “new” even though it may be several years old.
1967 plymouth barracuda antenna. chrysler made them and distributed them to retailers. stock was left over after they stopped making the cars.
1.) nitrous oxide systems, a company which creates systems for distributing nitrous oxide to automobile engines.

2.) commonly accepted replacement for the term “nitrous oxide.” however, this is not correct, and anyone who says “nos” instead of nitrous oxide should be shot.
uber1337: i gots nosssss in my civic~!
-bang-
manawski: didn’t you read my definition?
a recreational drug, often inhaled repet-tively with the help of balloons. causes about 12 seconds of euphoria. often accompanied by a “womp womp womp womp” sound, not unlike the experience of laughing gas.
p-ss me a balloon so i can fill it with nos.
the perfect party drug.
yo i had like 7 balloons of nos last night, i was swaying all over the place!
1. an energy drink in a can or bottle designed to look like a nos cartridge.

2. derived from the abbreviation of the company name nitrous oxide systems (nos), one of the pioneering companies in the development of nitrous oxide injection systems for automotive performance use. basically, it makes your car go a lot faster.
1. i had a nos last night, it was kick-ss.

2. when you’re looking to go fast, rely on nos.
1. nitrous oxide (or nos), a bottle of n2o that people are to sorry to admit are only used to be put on bad-ss cars to make them go a extra 30 to 50mph when the idiots crash into a wall and has to look good, but hay, i use it for my supra (which is not a fart rice because it is actually as fast as it looks, ricers have them look fast, but they really go slower then the stock version because they tried to tune it from their “inner street racing knowledge”).

2. a bottle that 34% of the time is used to be put on fart rice (big difference between ricer car and import car). and when it is equipped, the ricer realizes it’s empty because he bought it from the corner store as a drinkable liquid thats called nos.
ricer guy: yeah i need some nos

corner store guy: oh, you want nos ehh, i got it right here

ricer guy: oh, well here’s a dollar

corner store guy: no, this cost 5 dolla for 2 liter

ricer guy: d-mnit, i’ll just take a small shot

corner store guy: okay, that 3 dolla and 50 cent

ricer guy: what!

corner store guy: oh sorry, you said shot of nos, here you go 2 dolla

ricer guy: that couldnt even speed up my hot wheels car!!

corner store guy: just getta f-ck outta my store!!

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