| Answer | Crossword Clue |
|---|---|
| FEMTO | Quadrillionth (Prefix) |
| FEMTO | One quadrillionth: Prefix |
| FEMTO | Prefix for a quadrillionth |
| FEMTO | Prefix meaning "one-quadrillionth" |
| FEMTO | One-quadrillionth: Comb. form |
| femtosecond | one quadrillionth part of a second |
| quadrillionths | QUADRILLIONTH, one of a quadrillion equal parts |
| femtoseconds | FEMTOSECOND, one quadrillionth part of a second |
