category

Meaning

Noun

• A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
• A collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative.

Related

Similar words

• class, family, genus, group, kingdom, order, phylum, race, tribe, type

Narrower meaning words

• conceptual category
• Eilenberg-Moore category
• Kleisli category
• macrocategory
• microcategory
• monoid
• partially ordered set
• perceptual category
• subcategory
• supercategory

Origin

• Late Middle English, borrowed from French catégorie, from Middle French categorie, from Late Latin catēgoria, from Ancient Greek κατηγορία. categoria.