Definition

1. Noun:
   • A library classification system: The decimal system of classification is a method used by libraries to organize non-fiction books and publications by subject. Each subject is assigned a unique numerical code.
   • A hierarchical numerical system: In this system, knowledge is divided into ten main classes, each denoted by a three-digit number (000-999). Further subdivisions within a class are indicated by adding digits after a decimal point, allowing for increasingly specific topics.

Usage

• The decimal system of classification is primarily used to arrange physical books on library shelves in a logical, subject-based order. It is also used in library catalogs to assign a "call number" to each item, which patrons use to locate the material.

Examples

• Noun:
  • Most public libraries in the United States use the decimal system of classification known as the Dewey Decimal System.
  • To find a book on physics, you must first understand its number within the library's decimal system of classification.
  • The librarian explained how the decimal system of classification helps keep books on similar topics together.

Advanced Usage

• "to be shelved according to the decimal system of classification": This phrase describes the physical arrangement of library materials.
  • All nonfiction titles are shelved according to the decimal system of classification.

Variants and Related Words

• Dewey Decimal Classification (DDC) (n): The most common and widely used implementation of a decimal system of classification, created by Melvil Dewey.
  • The Dewey Decimal Classification is a specific type of decimal system of classification.
• Call number (n): The alphanumeric code based on the classification system that is placed on a book's spine.
  • The call number, derived from the decimal system of classification, is essential for locating the book.

Synonyms

• Library classification system: A general term for any system used to categorize library materials.
• Numerical classification: Highlights the use of numbers as the primary organizing principle.

Related Phrases

• To classify by decimal number: The action of applying this system.
  • The new acquisitions must be classified by decimal number before they can be shelved.

Noun

1. a system used by libraries to classify nonfictional publications into subject categories; the subject is indicated by a three-digit numeral and further specification is given by numerals following a decimal point; publications are shelved by number