is an option for notebooks that gives definitions for the styles that can be used in a notebook.


StyleDefinitions
is an option for notebooks that gives definitions for the styles that can be used in a notebook.
Details

- StyleDefinitions->"name.nb" specifies that style definitions from the notebook "name.nb" should be used.
- The standard notebook front end comes with a selection of style definition notebooks containing styles appropriate for particular purposes.
- StyleDefinitions->Notebook[…] allows style definitions to be given explicitly.
- The definition for a style named "s" is specified by the options for the first cell whose contents is StyleData["s"].
Examples
Basic Examples (1)
Create a document with styles defined in the standard stylesheet "Default.nb":
Check the StyleDefinitions setting:
Use SetOptions to switch to a different stylesheet:
See Also
ScreenStyleEnvironment PrintingStyleEnvironment StyleData StyleHints
Function Repository: AddStyleToNotebook
Related Guides
History
Introduced in 1996 (3.0)
Text
Wolfram Research (1996), StyleDefinitions, Wolfram Language function, https://reference.wolfram.com/language/ref/StyleDefinitions.html.
CMS
Wolfram Language. 1996. "StyleDefinitions." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/StyleDefinitions.html.
APA
Wolfram Language. (1996). StyleDefinitions. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/StyleDefinitions.html
BibTeX
@misc{reference.wolfram_2025_styledefinitions, author="Wolfram Research", title="{StyleDefinitions}", year="1996", howpublished="\url{https://reference.wolfram.com/language/ref/StyleDefinitions.html}", note=[Accessed: 08-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_styledefinitions, organization={Wolfram Research}, title={StyleDefinitions}, year={1996}, url={https://reference.wolfram.com/language/ref/StyleDefinitions.html}, note=[Accessed: 08-August-2025]}