Medword Resources:
Directions & Dosages Abbreviations |
Directions & Dosages Abbreviations
Drug Directions & Dosages Abbreviations
| Abbreviation | Derivation | Meaning |
| aa | ana | of each |
| ad | ad | up to |
| ad lib | ad libitum | as much as desired |
| b | bis | twice |
| C | | centigrade |
| c | cum | with |
| cc | | cubic centimeter |
| caps | capsula | capsule |
| Gm | gram | gram, grams |
| gr | granum,grana | grain, grains |
| gtt | gutta | drop, drops |
| (h) | hypodermic | under the skin |
| IM | | intramuscular |
| IV | | intravenous |
| kg | kilogram | thousand grams |
| l | liter | liter |
| LB., lb | libra | pound |
| ml | milliliter | thousandth of a liter |
| ocul | oculus | the eye |
| o.d. | oculo dextro | in right eye |
| o.s. | oculo sinistro | in left eye |
| o.u. | oculus uterque | in each eye |
| p.o. | per os | by mouth |
| q.s. | quantum sufficit | a sufficient quantity |
| R | recipe | take |
| s | sine | without |
| s.c., sub cut | sub cutem | subcutaneous |
| sig | signa | label, let it be labeled |
| s.o.s. | si opus sit | if necessary |
| ss | semis | one-half |
| tab | | tablet |
| tsp | teaspoon | teaspoonful |
| tbsp | tablespoon | tablespoonful |