A measured quantity of medicine or drug to be taken at one time. An amount or portion of something administered or experienced.
From Greek 'dosis' meaning a giving or gift, from 'didonai' to give. The medical sense developed from the idea of giving a measured amount of medicine to a patient.
The phrase 'dose of reality' cleverly extends the medical metaphor, suggesting that truth, like medicine, might be unpleasant but necessary for health. Paracelsus famously noted that 'the dose makes the poison' - even water can be toxic in excessive amounts.
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