source material

American  

noun

1. original, authoritative, or basic materials utilized in research, as diaries or manuscripts.

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Example Sentences

That's one of the biggest gaps between source material and film adaptation in the history of the best picture category.

From BBC

The decision to cast Chadran prompted backlash from a vocal set of fans, but it wasn't her lack of familiarity with the source material that upset them.

From BBC

Chandran, who also starred in season two of Bridgerton, tells BBC Newsbeat she wasn't too familiar with the source material before she was cast.

From BBC

Tracy said he wanted to respect the source material, but without feeling constricted by it.

From Barron's

“Cocktails in Heaven” is also the title of Arnold’s unpublished memoir and became the source material for the party’s chef, Gerardo Gonzalez, who scanned for passages where the artist mentioned his favorite foods — mainly hors d’oeuvres and copious glasses of Vermouth.

From Los Angeles Times