Definitions

from The Century Dictionary and Cyclopedia

  • n. In library-cataloguing, the number, or number and letter, which shows the class (as literature, history, philosophy, or science) to which a book belongs or the subject of which it treats. It is usually followed by other figures which indicate the particular division, subdivision, or section of the subject treated, and the number of the book.

Etymologies

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Examples

  • The absence of a class-number will sufficiently distinguish it from other classes.

    A Library Primer

  • In a very small library the books in a given class can be distinguished one from another by writing after the class-number of each book the number of that book in its class.

    A Library Primer

  • By consulting the catalog for the class-number, the book may be looked for in its proper place, thus often saving hunting through the shelves in several classes.

    A Library Primer

  • Every book in the library, as soon as it has been classified, and has received its proper author-number, should be entered in a list in the order first of its class-number, next of its author-number.

    A Library Primer

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