Submitted by György Chityil ... on Fri, 01/19/2018 - 16:41 Hierarchy: NounDescription: {{context|chemistry|physics}} The massive, positively charged central part of an atom, made up of protons and neutrons.Ngram: nucleusNgram Text: nucleusSource: WiktionaryIssue: 0Wiktionary tag: chemistryphysicsNgram Count: 1Wikokit WikiText ID: 989601