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Meaning [1] Latin (or Neo-Latin) origin [1] a.c. before meals: ante cibum a.d., ad, AD right ear auris dextra a.m., am, AM morning: ante meridiem: nocte every night Omne Nocte a.s., as, AS left ear auris sinistra a.u., au, AU both ears together or each ear aures unitas or auris uterque b.d.s, bds, BDS 2 times a day bis die sumendum b.i.d., bid, BID
q.h.s., qhs or qHS, Latin for "every night at bedtime", an abbreviation used in medical prescriptions A post-nominal used by the Queen's Honorary Surgeon, a member of the Medical Household , U.K. Other
Abbreviation Meaning q: each, every (from Latin quaque) q15: every 15 minutes q6h q6° once every 6 hours q2wk: once every 2 weeks qAc Before every meal (from Latin quaque ante cibum) q.a.d. every other day (from Latin quaque altera die) QALY: quality-adjusted life year: q.AM: every day before noon (from Latin quaque die ante meridiem) q.d.
This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes). This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).
Abbreviation Term Description (notes) A.d. As directed bd/bid Twice a day gt One drop gtt drops GSL General sales list Gutt/g Guttae (drops) Meds Medications Nocte/QHS At night Occ Ointment od/QD Once a day otc Over the counter (bought medication) P Pharmacy (drug) POM Prescription-only medicine prn When required q
Latin was once the universal academic language in Europe. From the 18th century, authors started using their mother tongues to write books, papers or proceedings. Even when Latin fell out of use, many Latin abbreviations continued to be used due to their precise simplicity and Latin's status as a learned language. [citation needed]
It uses periods for certain abbreviations that traditionally often have them (mostly older Latin/Neo-Latin abbreviations). For example, both bid and b.i.d. may be found in the list. It generally uses the singular form of an abbreviation (not the plural) as the headword .
The following list contains a selection from the Latin abbreviations that occur in the writings and inscriptions of the Romans. [ 1 ] [ 2 ] A few other non-classical Latin abbreviations are added. Contents: