Submitted by György Chityil ... on Fri, 01/19/2018 - 18:19 Hierarchy: NounDescription: {{chemistry|physics}} Any diatomic molecule, at least one of whose atoms is in an excited stateNgram: excimerNgram Text: excimerSource: WiktionaryIssue: 0Wiktionary tag: chemistryphysicsNgram Count: 1