From a Latin phrase meaning "the work of God." The informal name of The Personal Prelature of the Holy Cross and Opus Dei. It is a very conservative Roman Catholic lay organization organized in 1928, whose members have a strong dedication to the Vatican.
He is a Opus Dei from Vatican City
by Bernardlee May 26, 2006
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The Latin meaning for "Great Work". Usually meaning the greatest, most popular, pinnacle, or most renowned achievement of an artist, artist or composer. Or a "masterpiece"

Albiet in the case of George R.R. Martin, this refers to a big fat lazy and stinky turd (sometimes whistling in the wind for at least 8 years).
George R.R. Martin choked on a roasted water chestnut and died, leaving his Magnam Opus in his undergarments.
by UrBud2018 February 16, 2018
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1. A great work or achievement.

2. An inanimate object in Tower of Cone Mesh Climbing (Juke's Towers of Hell, Roblox) that falls down when you try to get on it, activating an object below. (also called, MY NEXT MAGNUM OPUS) Also, when jumping to it, it makes a loud "metal falling" sound.
Definition 1
Person 1: yo bro look at this magnum opus
Person 2: thats cool man

Definition 2
inanimate object: MY NEXT MAGNUM OPUS
player: *jumps to it*
inanimate object: *falls*
by MyNextMagnumOpus November 15, 2022
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Person 1: I will beat you with my Excalibur!
Person 2: Your penis is no match for my Magnum Opus!
by Soul_kai March 8, 2020
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The Magnum Opus is the highest working in Spiritual Satanism, and the end result of all legitimate occult disciplines, the allegories and the legends of the Gods.

The Magnum Opus is physical and spiritual perfection and immortality.
You are going to do Magnum Opus.
by RobyRoby August 7, 2018
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Oak Park University-Canada at Toronto. A university in the Riverdale neighbourhood of Toronto, Ontario. The university was founded by Mary Whitaker and Scott Ferguson in 1895 and has been a well kept secret ever since. Majors of the university include: racketeering, Canadian liquors, finance, business, hockey, lumberjacking, pinners, and curling. The university has been considered a poor reflection, a stereotype of sorts, on Canadian universities as a whole.
Who would've thought I could go to a school and major in alcohol?
Yeah, dude, OPU-C Toronto is where it's at.
by canadaeh October 20, 2008
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