English Reference

Word

classification

Phoneticsclas·si·fi·ca·tion, stress on the fourth syllable

US/ˌkɫæsəfəˈkeɪʃən/

UK/klˌæsɪfɪkˈeɪʃən/

Countable & uncountable

Definition

n. the act of putting things into groups based on how they are similar. It helps you organize information so it is easier to understand or find later.

n. the systematic arrangement of items into categories based on shared characteristics or criteria. Often implies a formal or scientific framework for organizing data.

Examples

“The library uses a specific system for the classification of books.”

“Biologists use a complex system of classification to group living organisms by their genetic similarities.”

“The rapid evolution of digital media has challenged traditional classification systems, forcing archivists to develop more flexible categories for hybrid creative works.”

Examples

simple

“The library uses a specific system for the classification of books.”

contextual

“Biologists use a complex system of classification to group living organisms by their genetic similarities.”

complex

“The rapid evolution of digital media has challenged traditional classification systems, forcing archivists to develop more flexible categories for hybrid creative works.”

Collocations

Common phrases and expressions where native English speakers use the word “classification” in context.

Noun

01. classification system

“The library uses a complex classification system to organize its vast collection of rare manuscripts.”

noun + noun

Usage

Uncountable when referring to the general process; countable when referring to a specific category or a particular system of organization.

Real-World Examples

“By occupying this unusual position, the genus helps fill an important gap in the existing classification system.”
ScienceDaily 4 Aug 2026
“The findings, published in the Cambridge University Press journal Antiquity , show that the helmets were manufactured between the late 14th and early 15th centuries, completely overturning their long-standing Roman classification.”
ScienceDaily 8 Jun 2026

Etymology

Borrowed from French classification.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Common
Level
C1 · AdvancedOxford
Updated

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English Reference