When used as a noun a fart refers to "an expulsion of intestinal gas1" or "An emission of wind from the anus; an instance of breaking wind2". So, I would say no it is not because it is defined as leaving the body. While in the body it is flatus which is gas in or from the stomach or intestines.
Is a fart the gas itself, or the passing of the gas? The definition says it is the passing of the gas. Therefore, a fart isn't a fart until it's been farted.
As a professional Fartographer, I can confirm this is the correct answer. Sometimes you're feeling confident that you're hanging out with a fart, but then it comes out to you as poop.
Then you have to tell it, "look, I still appreciate you as something I created, but I can't support your choice of being poop." And then you tell it that it has until the weekend to get out of your pants.
A fart is an ephemeral, gaseous configuration of molecules as they pass through a specific orifice in a specific direction.
In short, a fart is not the gas itself.
I don't want to stray from OP's question, but as it's already been answered: have you guys read the following paper on pre-fart gas re-entering the blood stream through the colon's wall?
Depends on whether you’re in a state where you can abort it. Some farts are farts from the moment of conception while others only when they are independent and actualized
Possible TMI warning, I'm into stuffing my butt with dildos and will occasionally do a deep clean with a large enema, around 6-8 liters. When I do that much it pushes the gas in my bowels back through to my stomach and it makes me burp. Gross but neat