noun Download 🔗Share A group, often named or numbered, to which items are assigned based on similarity or defined criteria. Examples : "The library organized its books by category, such as fiction, non-fiction, and children's books. " group type organization system structure thing essential Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share 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. Examples : "The library organizes books into different categories, like fiction, nonfiction, and children's literature. " math logic philosophy science essential Chat with AIVocabulary GamePractice Reading