Magnum opus

From TinWiki.org

1.) It is used to refer to the greatest achievement of an artist, composer, or author, and most commonly is used to refer to one who has contributed a great deal in their field of expertise.

2.) Also used in numerous spiritual traditions, such as Qabalah, Hermeticism, Alchemy, and Thelema, with a diverse and somewhat speculative meaning that mainly refers to the idea of the Philosopher's Stone.

Origins: from the Latin meaning of great work.

Also referred to as: Opus magnum

Plural Form: magna opera

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