| Answer | Crossword Clue |
|---|---|
| EXA | Prefix meaning "one-quintillionth" |
| ATTO | Prefix meaning "quintillionth" |
| ATTO | One-quintillionth: Prefix |
| UNI | Prefix meaning "one" |
| MONO | Prefix meaning "one" |
| NANO | Prefix meaning "one billionth" |
| TERA | Prefix meaning one trillion |
| NANO | Prefix meaning "one-billionth" |
| TERA | Prefix meaning "one trillion" |
| MILLI | Prefix meaning "one thousandth" |
| CENTI | Prefix meaning one-hundredth |
| EXA | Prefix meaning "one quintillion" |
| GIGA | Prefix meaning "one billion" |
| DECI | Prefix meaning "one tenth" |
| NANO | Prefix meaning one-billionth |
| FEMTO | Prefix meaning "one-quadrillionth" |
