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What Does oz Mean in Medical Terms?
oz stands for ounce. Unit of weight or fluid volume.
ounce
Unit of weight or fluid volume.
Where you will see oz
You will most often see oz in medication orders and prescriptions, medical charts and clinical notes.
Example
A medication order might be written with “oz” as shorthand for ounce.
Related abbreviations
- 3% saline — three percent saline (hypertonic)
- 5-FU — fluorouracil
- 6-MP — mercaptopurine
- 6-TG — thioguanine
- 7+3 — seven plus three induction
- A&O x4 — alert and oriented times four (person place time situation)
- a.c. — ante cibum (before meals)
- a.m. — ante meridiem (morning)
Browse the full Medical Abbreviations guide — 5,715 entries, searchable A–Z and by specialty.
Educational reference only. This guide is for learning and quick reference. Abbreviations vary between hospitals, countries and specialties, and some are discouraged because they can be misread. Always write and interpret orders using your own institution’s approved abbreviation list, and check anything unclear with the prescriber or your local policy.