Quantum sufʹficit. Two letters appended to prescriptions, and meaning as much as is required to make the pills up. Thus, after giving the drugs in minute proportions, the apothecary is told to “mix these articles in liquorice q.s.”
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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.
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