Classification is the process of putting something into a category. Classification of all your clothes by color may make it easier for you to put together an outfit, especially if you favor a monochrome look.

Classification involves putting things into a class or group according to particular characteristics so it’s easier to make sense of them, whether you’re organizing your shoes, your stock portfolio, or a group of invertebrates. If you’re an international spy, you might know that classification also can mean a government’s system for keeping secrets. If you have a high level of security classification, then you know really top secret stuff.

Definitions of classification
  1. noun
    the basic cognitive process of arranging into classes or categories
    synonyms: categorisation, categorization, sorting
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    being of coordinate importance, rank, or degree
    appraisal, assessment
    the classification of someone or something with respect to its worth
    ascription, attribution
    assigning to a cause or source
    ascription, attribution
    assigning some quality or character to a person or thing
    cross-classification, cross-division
    classification according to more than one attribute at the same time
    incorporating something under a more general category
    critical analysis, critical appraisal
    an appraisal based on careful analytical evaluation
    the attribution of animal forms or qualities to a god
    the attribution of consciousness and personality to natural phenomena such as thunderstorms and earthquakes and to objects such as plants and stones
    the attribution to a source or cause
    externalisation, externalization
    attributing to outside causes
    evaluation, rating, valuation
    an appraisal of the value of something
    assay, check
    an appraisal of the state of affairs
    acid test
    a rigorous or crucial appraisal
    reappraisal, reassessment, revaluation, review
    a new appraisal or evaluation
    an appraisal that underestimates the value of something
    type of:
    basic cognitive process
    cognitive processes involved in obtaining and storing knowledge
  2. noun
    the act of distributing things into classes or categories of the same type
    synonyms: assortment, categorisation, categorization, compartmentalisation, compartmentalization
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    the act of classifying and providing an index in order to make items easier to retrieve
    classifying something again (usually in a new category)
    the act of assigning (someone or something) to a particular class or category
    the act or process or arranging persons into classes or social strata
    practice of classifying plants and animals according to their presumed natural relationships
    classification according to general type
    type of:
    the activity of putting things together in groups
  3. noun
    a group of people or things arranged by class or category
    synonyms: categorisation, categorization
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    dichotomy, duality
    being twofold; a classification into two opposed parts or subclasses
    being threefold; a classification into three parts or subclasses
    type of:
    an orderly grouping (of things or persons) considered as a unit; the result of arranging
  4. noun
    restriction imposed by the government on documents or weapons that are available only to certain authorized people
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    reduction or removal by the government of restrictions on a classified document or weapon
    type of:
    confinement, restriction
    the act of keeping something within specified bounds (by force if necessary)
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