Submitted by György Chityil ... on Fri, 01/19/2018 - 23:17 Hierarchy: NounDescription: {{inorganic compound}} The simple systematic name for water, H<sub>2</sub>O.Ngram: hydrogen oxideNgram Text: hydrogen oxideSource: WiktionaryIssue: 0Wiktionary tag: inorganic compoundNgram Count: 2