The act of giving or taking a measured amount of medicine or drug.
From 'dose' (from Greek 'dosis' meaning 'a giving'), combined with the present participle suffix '-ing'. The word evolved from medical practice to describe the administration of measured quantities.
Dosing is why pharmacists are so careful—the difference between a helpful medicine and a poison is often just the dose! This concept inspired the famous toxicologist's principle: 'The dose makes the poison.'
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