subcategory

• sub-category

From sub- + category.

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subcategory (plural subcategories)

1. With respect to a given category; a narrower category.
   • 2005 August 8, Leslie Feinberg, “1952 court victory against anti-gay charges”, in Workers World‎^[1]:

     The moment subcategories of the overall population are denied rights, the rights of all are threatened.

   • 2013 April 2, CNN Living Staff, “Beware the parental overshare”, in CNN‎^[2]:

     I have categories within subcategories because I get so many submissions about poop and potty training.

   • 2024 March 13, Beatrice Loazya, “Is Poor Things a feminist film? Is Barbie? These have become meaningless questions”, in The Guardian‎^[3]:

     On the other hand, the label of “feminist” is beginning to feel more like a subcategory on Netflix – an algorithmic signpost – than a meaningful description of art.

2. (category theory) A subclass of a category which is itself a category, whose arrows are a restriction of the arrows of the parent category, and whose composition rule is a restriction of the parent category's.

   Synonym: child category

   Synonym: supercategory

• category