from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of femtometer.
Sorry, no etymologies found.
That number might be taken with a grain of salt (something which is measured in millimeters, not femtometers), because in 2003, the University of California, Berkeley came up with a world data creation number of only 5 exabytes (and isn't it a remarkable world when I can say "only 5 exabytes" and have it mean something?)
But the study team found it to be 0.84184 femtometers.