Thumb-indexed dictionary

By Xah Lee. Date: .

Thumb-indexed dictionary

what is the name of a book with thumb holes on the page edge used in big dictionary

  • Thumb-indexed dictionary
  • A thumb index (also known as a cut-in index) refers to the rounded notches or "thumb holes" cut into the fore-edge of pages in large reference books like dictionaries, encyclopedias, or Bibles.
  • These allow quick navigation to specific sections (e.g., alphabet letters).
  • The book itself is typically called a thumb-indexed edition, such as a thumb-indexed dictionary.
  • For example, many editions of the Oxford English Dictionary or Merriam-Webster's Collegiate Dictionary feature this for easier use.