DF: short, optional scale, either at the lower end or the upper of the thermometer, that contains a reference point, usually the ice point (0 °C)
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- DF: short, optional scale, either at the lower end or the upper of the thermometer, that contains a reference point, usually the ice point (0 °C)
DF: short, optional scale, either at the lower end or the upper of the thermometer, that contains a reference point, usually the ice point (0 °C)Broader Terms