| Answer | Crossword Clue |
|---|---|
| micra | the millionth part of a meter |
| mus | the millionth part of a meter |
| mu | the millionth part of a meter |
| micron | the millionth part of a meter |
| MICRON | Millionth part of a meter |
| microfarad | the millionth part of a farad |
| microfarads | MICROFARAD, the millionth part of a farad |
| billionth | the ordinal of billion / a thousand millionth part |
| millionth | the ordinal of million / a millionth part of |
