noun
1. the act of distributing things into classes or categories of the same type (Freq. 8)
• Syn: ↑categorization, ↑categorisation, ↑compartmentalization, ↑compartmentalisation, ↑assortment
• Derivationally related forms: ↑assort (for: ↑assortment), ↑compartmentalise (for: ↑compartmentalisation), ↑compartmentalize (for: ↑compartmentalization), ↑classify, ↑categorize (for: ↑categorization)
• Hypernyms: ↑grouping
• Hyponyms: ↑indexing, ↑reclassification, ↑relegation, ↑stratification, ↑taxonomy, ↑typology
2. a group of people or things arranged by class or category (Freq. 7)
• Syn: ↑categorization, ↑categorisation
• Derivationally related forms: ↑categorize (for: ↑categorization), ↑classify
• Hypernyms: ↑arrangement
• Hyponyms: ↑dichotomy, ↑duality, ↑trichotomy
3. the basic cognitive process of arranging into classes or categories
• Syn: ↑categorization, ↑categorisation, ↑sorting
• Derivationally related forms: ↑categorize (for: ↑categorization), ↑classify
• Hypernyms: ↑basic cognitive process
• Hyponyms:
↑coordination, ↑appraisal, ↑assessment, ↑attribution, ↑ascription, ↑cross-classification, ↑cross-division, ↑subsumption
4. restriction imposed by the government on documents or weapons that are available only to certain authorized people
• Ant: ↑declassification
• Derivationally related forms: ↑classify
• Hypernyms: ↑restriction, ↑confinement
Useful english dictionary. 2012.