<abbreviation> On a prescription, qds (or qid) means 4 times a day. ... Origin: L. Quater in die. ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973
Four Times a Day (Medication) Actually means quater die sumendum ie to be taken (sumendum) 4x a day. QID is uglier late Latin (quarter in die) – in classical Latin die was in the day and it was not needed to add the in in; indeed it would have caused a red line in the marking of the exam...
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See Quote Dissemination System
Found on
https://www.encyclo.co.uk/local/21119
No exact match found.
