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*Abbreviations
| Question | Answer |
|---|---|
| aa (with line over each) or aa | Of each |
| a.c. | Before meals |
| ad | To, up to |
| AD | Right ear (auris dextra) |
| ad lib | As desired |
| AM or a.m. | Morning |
| amt | Amount |
| aq. | Water |
| AS | Left ear (auris sinestra) |
| AU | Both ears (auris uterque) |
| b.i.d. or BID | Twice a day |
| b.i.n. | Twice a night |
| c (with line over it) | With |
| cap or caps | Capsule |
| comp | Compound |
| d | Day |
| dil. | Dilute |
| disp | Dispense |
| elix. | Elixer |
| hr | Hour |
| h.s. | Hour of sleep (bedtime) |
| IM | Intramuscular |
| inj. | Inject |
| IV | Intravenous |
| liq. | Liquid |
| mixt | mixture |
| mist. | A mixture |
| noc or noct. | Night |
| non rep | Do not repeat or No refills |
| NPO | Nothing by mouth (nulla per os) |
| O.D. | Right eye |
| oint | Ointment |
| O.S. | Both eyes, each eye |
| p.c. | After meals |
| per | Through or by |
| p.m. | Afternoon |
| p.o. | By mouth |
| p.t. | Through the rectum |
| p.r.n or PRN | As needed |
| p.v. | Through the vagina |
| pulv. | Powder |
| q | Every |
| q.d. | Every day |
| q.h. | Every hour |
| q2h | Every 2 hours |
| q.i.d. or QID | Four times a day |
| Qn | Every night |
| q.o.d. | Every other day |
| q.s. or q.v. | Quantity sufficient or As much as you wish |
| S (with a line over it) | Without |
| Sig. | Write on label |
| Sol. | Solution |
| sp. | Spirits |
| s.o.s. | If necessary |
| Stat | Immediately |
| Supp. | Suppository |
| Syr. | Syrup |
| Top. | Topically |
| Tab. | Tablet |
| t.i.d. or TID | Three times a day |
| tr. or tinct | Tincture |
| u.d. | As directed |
| vo | Verbal order |
| x | Times |