Definition of "ultrared" [ul•tra•red]

• Infrared (adjective)

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• "Its main console was installed in a specially designed executive office, mounted on an enormous executive desk of finest ultramahagony topped with rich ultrared leather."
• "Mascart, and others, adds much to our knowledge of the sun; while the photographs of Abney in the ultrared increase our information in a direction less expected and certainly less easy of attainment."
• "Investigations have been made as to whether different conditions of aggregation affect atoms and molecules, and the molecular conditions in electrolytic dissociation and the ultrared absorption spectrum of crystals have been studied."