Sig code: frequency
TID medical abbreviation
TID means "three times a day", from the Latin "ter in die".
Each meaning matched at least two public references (6 in all for TID), checked October 23, 2026. The table lists them.
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What TID means
| Meaning | Latin origin | Where used | Checked against |
|---|---|---|---|
| three times a day | ter in die | Prescriptions, Medication labels |
|
Also written: t.i.d.
Example
Sample label text: "take by mouth TID with meals."
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 TID mean in medical terms?
TID means "three times a day", from the Latin "ter in die".
What does TID stand for in Latin?
TID comes from "ter in die", meaning "three times a day".
Where is TID used?
TID shows up in prescriptions and medication labels. Its category here is sig code: frequency.
Is TID on the Joint Commission Do Not Use list?
No. TID is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.