Submitted by György Chityil ... on Sat, 01/20/2018 - 00:57 Hierarchy: AdjectiveDescription: {{context|of a topological space}} Having a countable base for its topology.Ngram: second countableNgram Text: second countableSource: WiktionaryIssue: 0Wiktionary tag: of a topological spaceNgram Count: 2