| n. | 1. | millimeter; - the IS standard abbreviation. |
| a. | 1. | (Chem.) millimolar; - the IS standard abbreviation. |
| Noun | 1. | mm - a metric unit of length equal to one thousandth of a meterSynonyms: millimeter, millimetre |
| (networking) | mm - The country code for Myanmar (Burma). |
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