subindex
/ˈsʌbˌɪndɛks/
noun
- A secondary or lower-level index, especially in a book, database, or list.
- You can search the database by main category or use a subindex for more specific topics.
- The report's subindex breaks down the data by region and year.
- The subindex at the back of the book lists all the authors mentioned in each chapter.
Synonyms