A versatile term that can be used as basically any part of speech in any context in any part of the world at any given time. Usually has a positive connotation, and is often used as a salutation. Rayo is a state of mind.
1. Kelsey Sargis is so rayo.

2. KS: Hey Jen.
JC: Rayo.

3. Rachel Davidson was feeling pretty rayo.
by kwaddus March 29, 2006
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slur used against gay people. (faggots)
oh so you’re gay? rayo.”
by gemmanoir123 November 30, 2020
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The largest finite number ever to be defined.
(As of Thursday December 17th 2020)
Friend: What's the greatest number you know?
cc: Rayo's Number.
by xRiver_ December 17, 2020
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the biggest finity number or non-infinity number every definded and is bigger than googolplex many times and rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber ^rayo's number^rayo'snumber will break your mindly big, but not even close to infinity
uh rayo's number its hard to used in a setence so yeah
by QSXDRFVGYHNJI February 16, 2021
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Feeling sorry for yourself and blaming everything and everybody else.
by Dabno March 25, 2019
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The largest finite (ending) number ever to be defined.
(As of Thursday December 17 2020)
Friend - What's the biggest number you know?
cc - Rayo's Number.
by xRiver_ December 17, 2020
Get the Rayo's Number mug.