As you may have noticed, above you will find words for "A unit of time equal to 0.000 000 000 000 001 seconds (i.e. 1×10⁻¹⁵ seconds) and with symbol fs.". Hover the mouse over the word you'd like to know more about to view its definition. Click to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.