Definition of dephlogisticated in US English:



  • Deprived of “phlogiston.” Oxygen was originally called dephlogisticated air by Joseph Priestley.

    • ‘Priestley's ‘discovery’ of dephlogisticated air was later reformulated into part of the discovery of oxygen by French aristocrat and polymath Antoine Lavoisier.’
    • ‘When informed by Priestley about dephlogisticated air, Lavosier repeated the experiments quantitatively.’
    • ‘Burn a log in the fireplace, air carries off the phlogiston, and the dephlogisticated log reveals itself as a pile of ashes.’
    • ‘Lavoisier's colleague Claude Berthollet therefore proposed that Scheele's dephlogisticated muratic acid gas must be a combination of oxygen and an undiscovered element, muriaticum.’
    • ‘After other attempts to release oxygen failed, Davy concluded that dephlogisticated muriatic acid gas was actually an element rather that a compound with oxygen.’