Sig code: frequency
QID medical abbreviation
QID means "four times a day", from the Latin "quater in die".
Each meaning matched at least two public references (6 in all for QID), checked October 23, 2026. The table lists them.
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What QID means
| Meaning | Latin origin | Where used | Checked against |
|---|---|---|---|
| four times a day | quater in die | Prescriptions, Medication labels |
|
Also written: q.i.d.
Example
Sample label text: "use QID."
A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.
Related abbreviations
Elsewhere on Rivvi
Questions
What does QID mean in medical terms?
QID means "four times a day", from the Latin "quater in die".
What does QID stand for in Latin?
QID comes from "quater in die", meaning "four times a day".
Where is QID used?
QID shows up in prescriptions and medication labels. Its category here is sig code: frequency.
Is QID on the Joint Commission Do Not Use list?
No. QID is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.