femtometre

== English == === Etymology === From femto- +‎ metre. === Noun === femtometre (plural femtometres) (metrology) An SI unit of length equal to 10−15 metres. Symbol: fm Alternative forms: fm (symbol), femtometer (US) Holonyms: picometre < nanometre < micrometre < millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre < exametre < zettametre < yottametre < ronnametre < quettametre Meronyms: yoctometre < zeptometre < attometre ==== Derived terms ==== femtometric ==== Translations ==== === Anagrams === femtometer