From Wikipedia, the free encyclopedia

This is a "root" category, a top-level place to start when browsing Wikipedia categories for articles. This is the top level in terms of encyclopedia article function and content.

An alternative root category, based on a somewhat more detailed initial classification, is Category:Main topic classifications.

The top level of Wikipedia's overall category system, containing both articles and other Wikipedia project pages, is Category:Contents.

It is possible to display the entire tree (really a directed graph) of child categories of the subcategories (e.g. the grandchild categories of the Fundamental category). To expand the tree, click the plus sign [+] to the left of the subcategories. To shrink the child subcategories, click the minus sign [-].

From Wikiquote

Ideally, a category illuminates a relationship between the subjects and objects of knowledge. Fundamentals are basics; they are important because they are something that other things can be built upon. Some basic categories are used on the main page (see Category:Main page). Wikiquote:Category schemes describes the system.

Definition from Wiktionary, a free dictionary

Articles on this topic in other Wikimedia projects can be found at: Wikimedia Commons Category Fundamental

This page is the top-level category, under which all categories at Wiktionary should lie.

Note that most categories are in Category:All topics or under individual languages.