One of Jupiter's moons. It has colourful volcanic lava!!
"hey, did you know that Jupiter's moon, Io, has colourful volcanic lava?"
by riot ghouls rule July 30, 2021
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The lecture is on Tue io Thu.

OR (it may be used with dots)

I bought some bananas i.o. apples.
by veekadikoydegskupayialiyor December 31, 2013
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Daniel: "Your Craigslist buyer backed out..."
Marianne: "IO."
by mabmoney June 9, 2015
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Jovian moon that orbits around the planet Jupiter.
by u.ber. August 22, 2003
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A zombie queen with an irresistable personality.
"IO can't brain today. She has the dumb."
by Carie Ann March 31, 2008
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in•for•ma•tion o•ver•load
adj.

1. Business. Sadistic practice in
which a subordinate is given
ambiguous instructions to
complete arbitrary tasks. Also
see “spreadsheets.”
2. Computer Science. Loss of
superhuman state due to
executing subhuman tasks
normally performed by automated
systems. Also see “Windows.”
3. Law. Conditional state reached
in the first year of Law School.
Also see “BAR Exam.”
4. Math. Required state to attend
courses involving “string” in
their title. Also see “MIT.”
5. Medicine. Conditional state
reached in the forth year of
Medical School. Also see
“residency.”
6. Physics. Conditional state
reached during doctoral
dissertation in which common
sense is overwritten with
theoretical knowledge. Also see
Steven Hawking.”
Superhumans suffer io due to subhumans lack of understanding technology.
by Corey Lohr June 4, 2004
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