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