the abbreviation of intravenous. The method of application of some medicines and drugs.
by ladysali March 12, 2010
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the abbreviation of Isla Vista, the small college community connected to UC Santa Barbara, one of the top 10 party schools.
I went to a crazy party in IV last weekend and got hella smashed.
by Lauren Holden March 31, 2005
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1) 'Four' in Roman numerals.

2) Intraveneous, as in 'intraveneous fluids'.
1) Harold IV was the fourth Harold in his family.

2) While you're here, sir, we need to hook you up to this IV.
by Diggity Monkeez February 9, 2005
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IV (abbreviation for Initial Value) in Pokemon video games (blue, emerald, diamond, etc.) - IVs are randomly generated numbers that give individual Pokemon a bonus from 1-31 in each stat. These are set bonuses that are unchangeable from the time the Pokemon is born or first seen in the wild.
Not all Pokemon are created equal. My Pikachu is better than yours because he was born with a 31 IV in speed and special attack.
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Does your title give the IV, the DV, and the method used in your study?
by Gods own G March 13, 2006
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Grand Theft Auto 4, or GTA IV.
IV also is roman numeral for 4.
(Example one)
Random Guy 2: YAYS!
(Example two)
Some Roman Guy 1: IV means 4.
Some Roman Guy 2: No shit...
by Tony Scarface Montana September 7, 2008
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"IVS" is an acronym that stands for Indestructible Vagina Syndrome. This is the name given to a woman that can be kicked in the crotch and be unharmed.
"Ha! I just kicked your vagina!"

"I have IVS, therefore, I am unhurt."

"Oh, shi-"
by Mistress 9 November 16, 2008
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