Unit of measure
MM medical abbreviation
MM means "millimeter".
Each meaning matched at least two public references (3 in all for MM), checked October 23, 2026. The table lists them.
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What MM means
| Meaning | Latin origin | Where used | Checked against |
|---|---|---|---|
| millimeter | None | Prescriptions, Charting |
Also written: mm.
Example
Sample report unit: "mm."
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 MM mean in medical terms?
MM means "millimeter".
Where is MM used?
MM shows up in prescriptions and charting. Its category here is unit of measure.
Is MM on the Joint Commission Do Not Use list?
No. MM is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.