decimal classification
LowTechnical / Academic / Library Science
Definition
Meaning
A system for organizing library materials or other information using a decimal notation to represent subject categories.
A hierarchical, numerical system of classification where knowledge is divided into ten main classes, each further subdivided decimally, most famously exemplified by the Dewey Decimal Classification (DDC).
Linguistics
Semantic Notes
Refers specifically to the methodology or system itself. Often used with a capital letter when referring to the proprietary 'Dewey Decimal Classification' system. It is a hyponym of 'library classification'.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. The system is internationally standardized.
Connotations
Both variants carry the same technical, institutional connotation.
Frequency
Equally low-frequency in both dialects, confined to professional/academic contexts in library and information science.
Vocabulary
Collocations
Grammar
Valency Patterns
The decimal classification of [material/books]to classify [something] according to decimal classificationthe adoption of decimal classification by [institution]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Rare. Might be mentioned in the context of organizing corporate archives or knowledge management systems.
Academic
Primary context. Used in library science, information studies, and archival management courses and literature.
Everyday
Extremely rare. Most non-specialists know the term 'Dewey Decimal System' but not the generic 'decimal classification'.
Technical
Standard term within library and information science for describing classification systems using a decimal notation structure.
Examples
By CEFR Level
- Most public libraries use the Dewey decimal classification to organise books.
- The decimal classification system allows for infinite expansion through its hierarchical decimal notation.
- Critics of rigid decimal classification argue that it can impose Western epistemological structures on global knowledge systems.
Learning
Memory Aids
Mnemonic
Think of decimals in maths (0.1, 0.2) spreading out to classify every topic in a library.
Conceptual Metaphor
KNOWLEDGE IS A TREE (with decimal branches and sub-branches).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'десятичная классификация' unless specifically referring to the Dewey system; the general Russian term is 'децимальная классификация' or 'библиотечно-библиографическая классификация (ББК)'.
- The word 'decimal' refers to the structure (base-10), not to the number 'ten' as in a count.
Common Mistakes
- Using 'decimal classification' as a verb (e.g., 'I will decimal classify this book'). Correct: 'I will classify this book using the decimal system.'
- Confusing it with 'decimal numbering' in general contexts unrelated to libraries.
Practice
Quiz
What is the primary purpose of a decimal classification system?
FAQ
Frequently Asked Questions
Not exactly. 'Decimal classification' is the generic term for any classification system using a decimal notation. The 'Dewey Decimal System' (DDC) is the most famous and widely used specific example of a decimal classification.
You might encounter it in museum archives, digital asset management systems, or any large-scale information repository that uses a numerical, hierarchical taxonomy for organising items by subject.
No, it is a noun phrase. The related verb is 'to classify' (using the decimal system).
The main alternative systems are the Library of Congress Classification (LCC), which uses alphanumeric codes, and universal decimal classification (UDC), which is an expanded, more complex derivative of Dewey.