Top Definition
IRT
In Reply To or In Response To
Blaze: Can anybody help me??
Luke: IRT Blaze Yes I can.
by Diamond January 10, 2004

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irt
acronym standing for "in real time"

when added to a sentence or exchange of information, "irt"gives the context that the data just exchanged is the most recent, i.e., relevant.

real time: live, current, present, as-it-happens, as-of-now
YOU: aren't you getting my texts?
ME: no sorry- my phone number is 555-2334 irt. text me there.
YOU: why?
ME: bc i never paid my bill so i'm using a text-to-talk app.

it's 7:52 a.m. irt but by the time you read this it could be evening.
by buttboss August 13, 2016

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IRT
Interborough Rapid Transit Company, aka the subway train.
In NYC, if you catch the IRT Lexington Avenue Line, you'll end up in a ratchet neighborhood.
by N3vvRmiNd March 23, 2014

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I run this shit.
Sally: Woah, you beat me at Halo... again...
Bob: YEAH, SON, IRTS.
Sally: You're a bad sport.
Bob: Suck it.
by lauuuuryyynnn July 21, 2008

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irt
The sound one makes at the frustration of having performed a typo.
Bob (typing) : Hey man, what are you doinfgh tonight?

Bob (speaking) : IRT
by Ironmanning July 03, 2010

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