English Wikibooks has more about this subject: Topology/Topological Spaces Wikibooks Noun standard topology (uncountable) (topology) The topology of the real number system generated by a basis which consists of all open balls (in the real number system), which are defined in terms of the one-dimensional Euclidean metric. (topology) The topology of a Euclidean space R n {\displaystyle \mathbb {R} ^{n}} such that any subset of that space is open (i.e. belonging to the topology) if it can be written as a union of open balls from that space.Wikiwand - on Seamless Wikipedia browsing. On steroids.