Submitted by György Chityil ... on Fri, 01/19/2018 - 23:22 Hierarchy: AdjectiveDescription: {{topology|of a manifold}} Containing a sphere of codimension 1 that is not the boundary of a ball.Ngram: reducibleNgram Text: reducibleSource: WiktionaryIssue: 0Wiktionary tag: topologyof a manifoldNgram Count: 1