onehotbob
1 Answer
ROMOS
um, ums
symbols sometimes used for the micrometer (micron). The symbol um is acceptable in situations where the Greek letter mu (µ) is not available to make the proper symbol µm. However, the "plural" symbol ums is never acceptable, because the SI prohibits adding -s to a symbol to form a plural.
| 13 years ago. Rating: 5 | |
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